358658
Assertion : If magnetic flux through any circuit changes then an emf is induced in it. This emf is equal to negative of rate of change of flux. Reason : Direction of induced emf is always such that it always opposes the cause by which it is produced.
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:
\(\varepsilon_{\text {ind }}=-d \phi / d t\). Option (1) is correct.
PHXII06:ELECTROMAGNETIC INDUCTION
358659 In the above diagram, a strong bar magnet is moving towards solenoid-2 from solenoid-1. The direction of induced current in solenoid-1 and that in solenoid-2, respectively, are through the directions:
1 \({A B}\) and \({D C}\)
2 \({B A}\) and \({C D}\)
3 \({A B}\) and \({C D}\)
4 \({B A}\) and \({D C}\)
Explanation:
North of magnet is moving away from solenoid 1 so end \(B\) of solenoid 1 is South and as south of magnet is approaching solenoid 2 so end \(C\) of solenoid 2 is South. The direction of flow of currents are shown in figure. Correct option is (1).
NEET - 2024
PHXII06:ELECTROMAGNETIC INDUCTION
358660
A copper ring having a small cut is held horizontally and a bar magnet is dropped through the ring with its length along the axis of the ring. The acceleration of the falling magnet while it is passing through the ring is
1 More than that due to gravity
2 Less than that due to gravity
3 Depends on the diameter of the ring and the length of the magnet
4 Equal to that due to gravity
Explanation:
If coil is broken at any point then induced emf will be generated in it but no induced current will flow. In this condition the coil will not oppose the motion of magnet and the magnet fall freely with acceleration \(g\). (i.e, \(a = g\) )
PHXII06:ELECTROMAGNETIC INDUCTION
358661
In the diagram shown if a bar magnet is moved along the common axis of two coils \(A\) and \(B\) in the direction of arrow
1 Current is induced only in \(B\) and not in \(A\)
2 Current is induced only in \(A\) & not in \(B\)
3 Induced currents in \(A\) & \(B\) are in opposite directions
4 Induced currents in \(A\) & \(B\) are in the same direction
Explanation:
As the magnet is approaching coil \(B\) and receding from coil \(A\) then current will be induced in the coils in opposite directions.
NEET Test Series from KOTA - 10 Papers In MS WORD
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PHXII06:ELECTROMAGNETIC INDUCTION
358658
Assertion : If magnetic flux through any circuit changes then an emf is induced in it. This emf is equal to negative of rate of change of flux. Reason : Direction of induced emf is always such that it always opposes the cause by which it is produced.
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:
\(\varepsilon_{\text {ind }}=-d \phi / d t\). Option (1) is correct.
PHXII06:ELECTROMAGNETIC INDUCTION
358659 In the above diagram, a strong bar magnet is moving towards solenoid-2 from solenoid-1. The direction of induced current in solenoid-1 and that in solenoid-2, respectively, are through the directions:
1 \({A B}\) and \({D C}\)
2 \({B A}\) and \({C D}\)
3 \({A B}\) and \({C D}\)
4 \({B A}\) and \({D C}\)
Explanation:
North of magnet is moving away from solenoid 1 so end \(B\) of solenoid 1 is South and as south of magnet is approaching solenoid 2 so end \(C\) of solenoid 2 is South. The direction of flow of currents are shown in figure. Correct option is (1).
NEET - 2024
PHXII06:ELECTROMAGNETIC INDUCTION
358660
A copper ring having a small cut is held horizontally and a bar magnet is dropped through the ring with its length along the axis of the ring. The acceleration of the falling magnet while it is passing through the ring is
1 More than that due to gravity
2 Less than that due to gravity
3 Depends on the diameter of the ring and the length of the magnet
4 Equal to that due to gravity
Explanation:
If coil is broken at any point then induced emf will be generated in it but no induced current will flow. In this condition the coil will not oppose the motion of magnet and the magnet fall freely with acceleration \(g\). (i.e, \(a = g\) )
PHXII06:ELECTROMAGNETIC INDUCTION
358661
In the diagram shown if a bar magnet is moved along the common axis of two coils \(A\) and \(B\) in the direction of arrow
1 Current is induced only in \(B\) and not in \(A\)
2 Current is induced only in \(A\) & not in \(B\)
3 Induced currents in \(A\) & \(B\) are in opposite directions
4 Induced currents in \(A\) & \(B\) are in the same direction
Explanation:
As the magnet is approaching coil \(B\) and receding from coil \(A\) then current will be induced in the coils in opposite directions.
358658
Assertion : If magnetic flux through any circuit changes then an emf is induced in it. This emf is equal to negative of rate of change of flux. Reason : Direction of induced emf is always such that it always opposes the cause by which it is produced.
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:
\(\varepsilon_{\text {ind }}=-d \phi / d t\). Option (1) is correct.
PHXII06:ELECTROMAGNETIC INDUCTION
358659 In the above diagram, a strong bar magnet is moving towards solenoid-2 from solenoid-1. The direction of induced current in solenoid-1 and that in solenoid-2, respectively, are through the directions:
1 \({A B}\) and \({D C}\)
2 \({B A}\) and \({C D}\)
3 \({A B}\) and \({C D}\)
4 \({B A}\) and \({D C}\)
Explanation:
North of magnet is moving away from solenoid 1 so end \(B\) of solenoid 1 is South and as south of magnet is approaching solenoid 2 so end \(C\) of solenoid 2 is South. The direction of flow of currents are shown in figure. Correct option is (1).
NEET - 2024
PHXII06:ELECTROMAGNETIC INDUCTION
358660
A copper ring having a small cut is held horizontally and a bar magnet is dropped through the ring with its length along the axis of the ring. The acceleration of the falling magnet while it is passing through the ring is
1 More than that due to gravity
2 Less than that due to gravity
3 Depends on the diameter of the ring and the length of the magnet
4 Equal to that due to gravity
Explanation:
If coil is broken at any point then induced emf will be generated in it but no induced current will flow. In this condition the coil will not oppose the motion of magnet and the magnet fall freely with acceleration \(g\). (i.e, \(a = g\) )
PHXII06:ELECTROMAGNETIC INDUCTION
358661
In the diagram shown if a bar magnet is moved along the common axis of two coils \(A\) and \(B\) in the direction of arrow
1 Current is induced only in \(B\) and not in \(A\)
2 Current is induced only in \(A\) & not in \(B\)
3 Induced currents in \(A\) & \(B\) are in opposite directions
4 Induced currents in \(A\) & \(B\) are in the same direction
Explanation:
As the magnet is approaching coil \(B\) and receding from coil \(A\) then current will be induced in the coils in opposite directions.
358658
Assertion : If magnetic flux through any circuit changes then an emf is induced in it. This emf is equal to negative of rate of change of flux. Reason : Direction of induced emf is always such that it always opposes the cause by which it is produced.
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:
\(\varepsilon_{\text {ind }}=-d \phi / d t\). Option (1) is correct.
PHXII06:ELECTROMAGNETIC INDUCTION
358659 In the above diagram, a strong bar magnet is moving towards solenoid-2 from solenoid-1. The direction of induced current in solenoid-1 and that in solenoid-2, respectively, are through the directions:
1 \({A B}\) and \({D C}\)
2 \({B A}\) and \({C D}\)
3 \({A B}\) and \({C D}\)
4 \({B A}\) and \({D C}\)
Explanation:
North of magnet is moving away from solenoid 1 so end \(B\) of solenoid 1 is South and as south of magnet is approaching solenoid 2 so end \(C\) of solenoid 2 is South. The direction of flow of currents are shown in figure. Correct option is (1).
NEET - 2024
PHXII06:ELECTROMAGNETIC INDUCTION
358660
A copper ring having a small cut is held horizontally and a bar magnet is dropped through the ring with its length along the axis of the ring. The acceleration of the falling magnet while it is passing through the ring is
1 More than that due to gravity
2 Less than that due to gravity
3 Depends on the diameter of the ring and the length of the magnet
4 Equal to that due to gravity
Explanation:
If coil is broken at any point then induced emf will be generated in it but no induced current will flow. In this condition the coil will not oppose the motion of magnet and the magnet fall freely with acceleration \(g\). (i.e, \(a = g\) )
PHXII06:ELECTROMAGNETIC INDUCTION
358661
In the diagram shown if a bar magnet is moved along the common axis of two coils \(A\) and \(B\) in the direction of arrow
1 Current is induced only in \(B\) and not in \(A\)
2 Current is induced only in \(A\) & not in \(B\)
3 Induced currents in \(A\) & \(B\) are in opposite directions
4 Induced currents in \(A\) & \(B\) are in the same direction
Explanation:
As the magnet is approaching coil \(B\) and receding from coil \(A\) then current will be induced in the coils in opposite directions.
