Home
Class 12
PHYSICS
A long solenoid of cross-sectional area ...

A long solenoid of cross-sectional area `5.0 cm^2` is wound with 25 turns of wire per centimetre. It is placed in the middle of a closely wrapped coil of 10 turns and radius 25 cm as shown.


(a) What is the emf induced in the coil when the current through the solenoid is decreasing at a rate `-0.20 A//s` ?
(b) What is the electric field induced in the coil?

Promotional Banner

Similar Questions

Explore conceptually related problems

A long solcnoid of length 1m, cross-sectional area 10cm^(2) , having 1000 turns has wound about its centre a small coil of 20 turns. Compute the mutual inductance of the pair of solenoid and the coil . What is the induced EMF in the coil when the current in the solenoid changes at the rate of 10 A//s ?

The inductance of a solenoid 0.5m long of cross-sectional area 20cm^(2) and with 500 turns is

A long solenoid of length 50 cm and cross sectional area 10cm^2 is closely wound with 1000 turns of wire. A small coil of 10 turns surrounds it at its centre. Calculate the mutual inductance of the two coils.

A long solenoid of length 1 m, cross sectional area 10 cm^2 , having 1000 turns has wound about its centre a small coil of 20 turns. Compute the mutual inductance of the two circuits. What is e.m.f. in the coil when the current in the solenoid chanages at the rate of 10 As^-1 ?

An ideal solenoid of cross-sectional area 10^(-4)m^(2) has 500 turns per metre. At the centre of this solenoid, another coil of 100 turns is wrapped closely around it. If the current in the coil changes from 0 to 2 A in 3.14 ms, the emf developed in the second coil is

An ideal solenoid of cross-sectional area 10^(-4)m^(2) has 500 turns per metre. At the centre of this solenoid, another coil of 100 turns is wrapped closely around it. If the current in the coil changes from 0 to 2 A in 3.14 ms, the emf developed in the second coil is

A long solenoid having 400 turns per cm carries a current 2A. A 100 turn coil of cross-sectional area 4 cm2 is placed co-axially inside the solenoid so that the coil is in the field produced by the solenoid. Find the emf induced in the coil if the current through the solenoid reverse its direction in 0.04 sec.

a. Calculate the inductance of an air core solenoid containing 300 turns if the length of the solenoid is 25.0cm and its cross -sectional area is 4.00cm^2 . b. Calculate the self -induced emf in the solenoid if the current through it is decreasing at the rate of 50.0A//s .

A circular coil with a cross-sectional area of 4cm^(2) has 10 turns. It is placed at the center of a long solenoid that has 15 turns/cm and a cross sectional area of 10cm^(2) , shown in the figure. The axis of the coil conicides with the axis of the solenoid. What is their mutual inductance?

A circular coil with a cross-sectional area of 4cm^(2) has 10 turns. It is placed at the center of a long solenoid that has 15 turns/cm and a cross sectional area of 10cm^(2) , shown in the figure. The axis of the coil conicides with the axis of the solenoid. What is their mutual inductance?