Home
Class 12
PHYSICS
A coil having an areaA0 is placed in a ...

A coil having an area`A_0` is placed in a magnetic field which changes from `B_0` to `4B_0` in time interval t. The emf induced in the coil will be

A

`3A_0B_0 // t`

B

`4A_0 B_0 // t`

C

`3B_0 // A_0 t `

D

`4B_0 // A_0 t`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION

    AAKASH SERIES|Exercise PRACTICE EXERCISE (MOTIONAL EMF)|4 Videos

  • ELECTROMAGNETIC INDUCTION

    AAKASH SERIES|Exercise PRACTICE EXERCISE (SELF INDUCTANCE AND MUTUAL INDUCTANCE)|12 Videos

  • ELECTROMAGNETIC INDUCTION

    AAKASH SERIES|Exercise EXERCISE - II (DC CIRCUITS)|5 Videos

  • ELECTRIC FIELD AND POTENTIAL

    AAKASH SERIES|Exercise PROBLEMS (LEVEL-II)|32 Videos

  • ELECTROMAGNETIC WAVES

    AAKASH SERIES|Exercise EXERCISE -II|20 Videos

Similar Questions

Explore conceptually related problems

A coil having an area 2m^2 is placed in a magnetic field which changes from 1Wb//m^2 to 4Wb/m^2 in an interval of 2 seconds. The average e.m.f induced in the coil will be

1. A coil of area 2 cm^2 with turns 500 is placed in a magnetic field of 0.5 T with its plane parallel to field. The flux linked with the coil is

A 50 turns circular coil has a radius of 3 cm, it is kept in a magnetic field acting normal to the area of the coil. The magnetic field B increased from 0.10 tesla to 0.35 tesla in 2 milliseconds. The average induced e.m.f in the coil is

A coil is rotated in a uniform magnetic field about an axis perpendicular to the field. The emf induced in the coil would be maximum when the plane of coil is :

A circular coil of 20 turns and radius 10 cm is placed in a uniform magnetic field of 0.10 T normal to the plane of the coil. If the current in the coil is 5.0 A, what is the (a) total torque on the coil, (b) total force on the coil, (c) average force on each electron in the coil due to the magnetic field? (The coil is made of copper wire of cross-sectional area 10^(-5) m^2 , and the free electron density in copper is given to be about 10^29 m^(-3) .)

A circular coil of area 0.1 m^(2) having 200 turns is placed in a magnetic field of 40 T. The plane of the coil makes 30^(@) with the field. If the field is removed for 0.1 s then the induced emf in the coil is

A coil having 500 square loops each of side 10 cm is placed normal to a magnetic field which increases at the rate of 1.0 "tesla"//"second" . The induced e.m.f. in volts is