Home
Class 12
PHYSICS
Assertion: Magnetic field B (shown inwar...

Assertion: Magnetic field `B` (shown inwards) varies with time `t` as shown. At time to induced current in the loop is clockwise

Reason : If rate of change of magnetic flux from a coil is constant, charge should flow in the coil at a constant rate.

A

If both Assertion and Reason are true and the Reason is correct explanation of the Assertion.

B

If both Assertion and Reason are true but Reason is not the correct explanation of Assertion

C

If Assertion is true, but the Reason is false.

D

If Assertion is false but the Reason is true.

Text Solution

Verified by Experts

The correct Answer is:
B
At time `t_0`, magnetic field is negative or and increasing.
Hence, induced current will produce `ox` magnetic field.Or induced current should to be clockwise.
If `(dphi)/(dt)=`constant. Then e=constant
`:. i` or rate of flow charge is constant.
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION

    DC PANDEY|Exercise Level 1 Objective|36 Videos

  • ELECTROMAGNETIC INDUCTION

    DC PANDEY|Exercise Objective Questions|3 Videos

  • ELECTROMAGNETIC INDUCTION

    DC PANDEY|Exercise Exercise 27.7|2 Videos

  • CURRENT ELECTRICITY

    DC PANDEY|Exercise Medical entrances gallery|97 Videos

  • ELECTROMAGNETIC WAVES

    DC PANDEY|Exercise Sec C|22 Videos

Similar Questions

Explore conceptually related problems

Prove that the charge induced does not depend on the rate of change of magnetic flux.

Assertion : A square loop is placed in x-y plane as shown in figure. Magnetic field in the region is B =- B_0x hatk . The induced current in the loop is anti-clockwise. Reason : If inward magnetic field from such a loop increases, then current should be anti-clockwise.

Assertion: Only a charge in magnetic flux will maintain an induced current in the coil. Reason: The presence of large magnetic flux through a coil maintains a current in the coil if the circuit is continuous.

The rate of change of magnetic flux linked with the coil is equal to the magnitude of induced e.m.f.' this is the statement of

Find the emf induced in the coil shown in figure.The magnetic field is perpendicular to the plane of the coil and is constant.

Find the emf induced in the coil shown in figure. The magnetic field is perpendicular to the plane of the coil and is constant.

The formula for induced e.m.f. in a coil due to change in magnetic flux through the coil is (here A = area of the coil, B = magnetic field)