358401
Assertion : A bar magnet is dropped into a long vertical copper tube. Even taking air resistance as negligible, the magnet attains a constant terminal velocity. Reason : Eddy current is produced in bar magnet.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
When a bar magnet is dropped into a long vertical copper tube. Eddy currents are induced in the copper tube due to electromagnetic induction, which generates a magnetic field opposing the magnet's motion, eventually leading to a constant terminal velocity for the magnet. Assertion is true. In reality, eddy currents are generated in the copper tube, not the bar magnet, Reason is false. So correct option is (3).
PHXII06:ELECTROMAGNETIC INDUCTION
358402
Assertion : A metallic surface is moved in and out in magnetic field then emf is induced in it. Reason : Eddy current will be produced in a metallic surface moving in and out of magnetic field.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
When a metallic surface is moved in and out of a magnetic field, the magnetic flux linked with the metallic surface changes continuously. According to Faraday's law of electromagnetic induction, a change in magnetic flux induces an electromotive force (emf) in the closed loop (the metallic surface, in this case). As a result, an induced current, known as eddy current, starts flowing in the metallic surface. Because it provides a valid explanation for why an emf is induced in the metallic surface when it is moved in and out of a magnetic field. Therefore, both the Assertion and Reason are correct, and the Reason is the correct explanation for the Assertion.
AIIMS - 2019
PHXII06:ELECTROMAGNETIC INDUCTION
358403
In which of the following devices, the eddy current effect is not used?
1 Induction furnace
2 Magnetic braking in train
3 Electromagnet
4 Electric heater
Explanation:
Electric heater does not involve Eddy currents. It uses Joule's law of heating.
NEET - 2019
PHXII06:ELECTROMAGNETIC INDUCTION
358404
Use of eddy currents is done in the following except
1 moving coil galvanometer
2 electric brakes
3 induction motor
4 dynamo
Explanation:
Eddy currents is not used in dynamo
PHXII06:ELECTROMAGNETIC INDUCTION
358405
The working of magnetic braking of trains is based on
1 Steady current
2 Eddy current
3 Alternating current
4 Pulsating current
Explanation:
The working of magnetic braking of trains is based on eddy current.
358401
Assertion : A bar magnet is dropped into a long vertical copper tube. Even taking air resistance as negligible, the magnet attains a constant terminal velocity. Reason : Eddy current is produced in bar magnet.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
When a bar magnet is dropped into a long vertical copper tube. Eddy currents are induced in the copper tube due to electromagnetic induction, which generates a magnetic field opposing the magnet's motion, eventually leading to a constant terminal velocity for the magnet. Assertion is true. In reality, eddy currents are generated in the copper tube, not the bar magnet, Reason is false. So correct option is (3).
PHXII06:ELECTROMAGNETIC INDUCTION
358402
Assertion : A metallic surface is moved in and out in magnetic field then emf is induced in it. Reason : Eddy current will be produced in a metallic surface moving in and out of magnetic field.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
When a metallic surface is moved in and out of a magnetic field, the magnetic flux linked with the metallic surface changes continuously. According to Faraday's law of electromagnetic induction, a change in magnetic flux induces an electromotive force (emf) in the closed loop (the metallic surface, in this case). As a result, an induced current, known as eddy current, starts flowing in the metallic surface. Because it provides a valid explanation for why an emf is induced in the metallic surface when it is moved in and out of a magnetic field. Therefore, both the Assertion and Reason are correct, and the Reason is the correct explanation for the Assertion.
AIIMS - 2019
PHXII06:ELECTROMAGNETIC INDUCTION
358403
In which of the following devices, the eddy current effect is not used?
1 Induction furnace
2 Magnetic braking in train
3 Electromagnet
4 Electric heater
Explanation:
Electric heater does not involve Eddy currents. It uses Joule's law of heating.
NEET - 2019
PHXII06:ELECTROMAGNETIC INDUCTION
358404
Use of eddy currents is done in the following except
1 moving coil galvanometer
2 electric brakes
3 induction motor
4 dynamo
Explanation:
Eddy currents is not used in dynamo
PHXII06:ELECTROMAGNETIC INDUCTION
358405
The working of magnetic braking of trains is based on
1 Steady current
2 Eddy current
3 Alternating current
4 Pulsating current
Explanation:
The working of magnetic braking of trains is based on eddy current.
358401
Assertion : A bar magnet is dropped into a long vertical copper tube. Even taking air resistance as negligible, the magnet attains a constant terminal velocity. Reason : Eddy current is produced in bar magnet.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
When a bar magnet is dropped into a long vertical copper tube. Eddy currents are induced in the copper tube due to electromagnetic induction, which generates a magnetic field opposing the magnet's motion, eventually leading to a constant terminal velocity for the magnet. Assertion is true. In reality, eddy currents are generated in the copper tube, not the bar magnet, Reason is false. So correct option is (3).
PHXII06:ELECTROMAGNETIC INDUCTION
358402
Assertion : A metallic surface is moved in and out in magnetic field then emf is induced in it. Reason : Eddy current will be produced in a metallic surface moving in and out of magnetic field.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
When a metallic surface is moved in and out of a magnetic field, the magnetic flux linked with the metallic surface changes continuously. According to Faraday's law of electromagnetic induction, a change in magnetic flux induces an electromotive force (emf) in the closed loop (the metallic surface, in this case). As a result, an induced current, known as eddy current, starts flowing in the metallic surface. Because it provides a valid explanation for why an emf is induced in the metallic surface when it is moved in and out of a magnetic field. Therefore, both the Assertion and Reason are correct, and the Reason is the correct explanation for the Assertion.
AIIMS - 2019
PHXII06:ELECTROMAGNETIC INDUCTION
358403
In which of the following devices, the eddy current effect is not used?
1 Induction furnace
2 Magnetic braking in train
3 Electromagnet
4 Electric heater
Explanation:
Electric heater does not involve Eddy currents. It uses Joule's law of heating.
NEET - 2019
PHXII06:ELECTROMAGNETIC INDUCTION
358404
Use of eddy currents is done in the following except
1 moving coil galvanometer
2 electric brakes
3 induction motor
4 dynamo
Explanation:
Eddy currents is not used in dynamo
PHXII06:ELECTROMAGNETIC INDUCTION
358405
The working of magnetic braking of trains is based on
1 Steady current
2 Eddy current
3 Alternating current
4 Pulsating current
Explanation:
The working of magnetic braking of trains is based on eddy current.
358401
Assertion : A bar magnet is dropped into a long vertical copper tube. Even taking air resistance as negligible, the magnet attains a constant terminal velocity. Reason : Eddy current is produced in bar magnet.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
When a bar magnet is dropped into a long vertical copper tube. Eddy currents are induced in the copper tube due to electromagnetic induction, which generates a magnetic field opposing the magnet's motion, eventually leading to a constant terminal velocity for the magnet. Assertion is true. In reality, eddy currents are generated in the copper tube, not the bar magnet, Reason is false. So correct option is (3).
PHXII06:ELECTROMAGNETIC INDUCTION
358402
Assertion : A metallic surface is moved in and out in magnetic field then emf is induced in it. Reason : Eddy current will be produced in a metallic surface moving in and out of magnetic field.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
When a metallic surface is moved in and out of a magnetic field, the magnetic flux linked with the metallic surface changes continuously. According to Faraday's law of electromagnetic induction, a change in magnetic flux induces an electromotive force (emf) in the closed loop (the metallic surface, in this case). As a result, an induced current, known as eddy current, starts flowing in the metallic surface. Because it provides a valid explanation for why an emf is induced in the metallic surface when it is moved in and out of a magnetic field. Therefore, both the Assertion and Reason are correct, and the Reason is the correct explanation for the Assertion.
AIIMS - 2019
PHXII06:ELECTROMAGNETIC INDUCTION
358403
In which of the following devices, the eddy current effect is not used?
1 Induction furnace
2 Magnetic braking in train
3 Electromagnet
4 Electric heater
Explanation:
Electric heater does not involve Eddy currents. It uses Joule's law of heating.
NEET - 2019
PHXII06:ELECTROMAGNETIC INDUCTION
358404
Use of eddy currents is done in the following except
1 moving coil galvanometer
2 electric brakes
3 induction motor
4 dynamo
Explanation:
Eddy currents is not used in dynamo
PHXII06:ELECTROMAGNETIC INDUCTION
358405
The working of magnetic braking of trains is based on
1 Steady current
2 Eddy current
3 Alternating current
4 Pulsating current
Explanation:
The working of magnetic braking of trains is based on eddy current.
358401
Assertion : A bar magnet is dropped into a long vertical copper tube. Even taking air resistance as negligible, the magnet attains a constant terminal velocity. Reason : Eddy current is produced in bar magnet.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
When a bar magnet is dropped into a long vertical copper tube. Eddy currents are induced in the copper tube due to electromagnetic induction, which generates a magnetic field opposing the magnet's motion, eventually leading to a constant terminal velocity for the magnet. Assertion is true. In reality, eddy currents are generated in the copper tube, not the bar magnet, Reason is false. So correct option is (3).
PHXII06:ELECTROMAGNETIC INDUCTION
358402
Assertion : A metallic surface is moved in and out in magnetic field then emf is induced in it. Reason : Eddy current will be produced in a metallic surface moving in and out of magnetic field.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
When a metallic surface is moved in and out of a magnetic field, the magnetic flux linked with the metallic surface changes continuously. According to Faraday's law of electromagnetic induction, a change in magnetic flux induces an electromotive force (emf) in the closed loop (the metallic surface, in this case). As a result, an induced current, known as eddy current, starts flowing in the metallic surface. Because it provides a valid explanation for why an emf is induced in the metallic surface when it is moved in and out of a magnetic field. Therefore, both the Assertion and Reason are correct, and the Reason is the correct explanation for the Assertion.
AIIMS - 2019
PHXII06:ELECTROMAGNETIC INDUCTION
358403
In which of the following devices, the eddy current effect is not used?
1 Induction furnace
2 Magnetic braking in train
3 Electromagnet
4 Electric heater
Explanation:
Electric heater does not involve Eddy currents. It uses Joule's law of heating.
NEET - 2019
PHXII06:ELECTROMAGNETIC INDUCTION
358404
Use of eddy currents is done in the following except
1 moving coil galvanometer
2 electric brakes
3 induction motor
4 dynamo
Explanation:
Eddy currents is not used in dynamo
PHXII06:ELECTROMAGNETIC INDUCTION
358405
The working of magnetic braking of trains is based on
1 Steady current
2 Eddy current
3 Alternating current
4 Pulsating current
Explanation:
The working of magnetic braking of trains is based on eddy current.
