358406
Assertion : A copper sheet is placed in a magnetic field. If we pull it out of the field or push it into the field, we experience an opposing force. Reason : According to Lenz's law eddy current produced in sheet opposes the motion of the sheet.
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:
The eddy currents create a magnetic field that opposes the change in the original magnetic flux, as per Lenz's law . Both Assertion and Reason are true and Reason is the correct explanation of Assertion. So correct option is \((1)\).
PHXII06:ELECTROMAGNETIC INDUCTION
358407
Changing magnetic fields can set up current loops in near by metal bodies and the currents are called as:
1 Eddy currents
2 Flux currents
3 Alternating currents
4 Leakage currents
Explanation:
Changing magnetic fields can set up current loops in nearby metal (any conductor) bodies. They dissipate electrical energy as heat. Such currents are called eddy currents.
PHXII06:ELECTROMAGNETIC INDUCTION
358408
A metallic rod connected to a string oscillates freely like a pendulum. If now a magnetic field is applied in horizontal direction so that the rod swings through the field, the rod will:
1 Keep oscillating with the old time period
2 Keep oscillating with a smaller time period
3 Keep oscillating with a larger time period
4 Come to rest
Explanation:
Eddy currents causes electromagnetic damping. So the rod comes to rest after some time.
358406
Assertion : A copper sheet is placed in a magnetic field. If we pull it out of the field or push it into the field, we experience an opposing force. Reason : According to Lenz's law eddy current produced in sheet opposes the motion of the sheet.
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:
The eddy currents create a magnetic field that opposes the change in the original magnetic flux, as per Lenz's law . Both Assertion and Reason are true and Reason is the correct explanation of Assertion. So correct option is \((1)\).
PHXII06:ELECTROMAGNETIC INDUCTION
358407
Changing magnetic fields can set up current loops in near by metal bodies and the currents are called as:
1 Eddy currents
2 Flux currents
3 Alternating currents
4 Leakage currents
Explanation:
Changing magnetic fields can set up current loops in nearby metal (any conductor) bodies. They dissipate electrical energy as heat. Such currents are called eddy currents.
PHXII06:ELECTROMAGNETIC INDUCTION
358408
A metallic rod connected to a string oscillates freely like a pendulum. If now a magnetic field is applied in horizontal direction so that the rod swings through the field, the rod will:
1 Keep oscillating with the old time period
2 Keep oscillating with a smaller time period
3 Keep oscillating with a larger time period
4 Come to rest
Explanation:
Eddy currents causes electromagnetic damping. So the rod comes to rest after some time.
358406
Assertion : A copper sheet is placed in a magnetic field. If we pull it out of the field or push it into the field, we experience an opposing force. Reason : According to Lenz's law eddy current produced in sheet opposes the motion of the sheet.
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:
The eddy currents create a magnetic field that opposes the change in the original magnetic flux, as per Lenz's law . Both Assertion and Reason are true and Reason is the correct explanation of Assertion. So correct option is \((1)\).
PHXII06:ELECTROMAGNETIC INDUCTION
358407
Changing magnetic fields can set up current loops in near by metal bodies and the currents are called as:
1 Eddy currents
2 Flux currents
3 Alternating currents
4 Leakage currents
Explanation:
Changing magnetic fields can set up current loops in nearby metal (any conductor) bodies. They dissipate electrical energy as heat. Such currents are called eddy currents.
PHXII06:ELECTROMAGNETIC INDUCTION
358408
A metallic rod connected to a string oscillates freely like a pendulum. If now a magnetic field is applied in horizontal direction so that the rod swings through the field, the rod will:
1 Keep oscillating with the old time period
2 Keep oscillating with a smaller time period
3 Keep oscillating with a larger time period
4 Come to rest
Explanation:
Eddy currents causes electromagnetic damping. So the rod comes to rest after some time.
