Home
Class 12
PHYSICS
A solenoid has a cross sectional area of...

A solenoid has a cross sectional area of `6.0xx10^(-4) m^(2)`, consists of `400` turns per meter, and carries a current of `0.40 A`. 10` turn coil is wrapped tightly around the circumference of the solenoid.The ends of the coil are connected to a `1.5 Omega` resistor.Suddenly, a switch is opened and the current in the solenoid dies to zero in a time `0.050 s`,Find the average current in the coil during the time.

Text Solution

Verified by Experts

The correct Answer is:
`1.6xx10^(-5)A`
Promotional Banner

Similar Questions

Explore conceptually related problems

A solenoid has a cross sectional area of 6.0xx10^(-4) m^(2) , consists of 400 turns per meter, and carries a current of 0.40 A . A 10 turn coil is wrapped tightly around the circumference of the solenoid.The ends of the coil are connected to a 1.5 Omega resistor.Suddenly, a switch is opened and the current in the solenoid dies to zero in a time 0.050 s ,Find the average current in the coil during the time.

A solenoid of cross-sectional area 2xx 10^(-4)m^(2) and 900 turns has 0.6A m^(2) magnetic moment. Then the current flowing through it 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

An air cored solenoid of length 50 cm and area of cross section 28 m^(2) has 200 turns and carries a current of 5.0 A. On switching off, the current decreases to across the ends of the solenoid. Find flux and emf induced if time is equal to 1.0 ms.

A long solenoid having 200 turns per centimeter carries a current of 1.5 A . At the center of the solenoid is placed a coil of 100 turns of cross-sectional area 3.14 xx 10^(-4) m^(2) having its axis parallel to the field produced by the solenoid. When the direction of current in teh solenoid is reversed within 0.05 s , the induced emf in the coil is

A closely wound solenoid of 750 turns and area of cross section of 5xx 10^(4)m^(2) carries a current of 3.0 A. Its associated magnetic moment is

A solenoid of 0.4111 length with 500 turns carries a current of 3A. A coil of 10 turns and of radius 0.01m carries a current of 0.4A. The torque required to hold the coil with its axis at right angles to that of solenoid in the middle point of it is

A solenoid consists of 100 turns of wire and has a length of 10 cm. The magnetic field inside the solenoid when it carries a current of 0.5 A will be :

An air cored solenoid is of length 0.3 m, area of cross section 1.2 xx 10^(-3) m^(2) and has 2500 turns. Around its central section, a coil of 350 turns is wound. The solenoid and the coil are electrically insulated from eachother. Calculate the e.m.f. induced in the coil if the initial current of 3 A in the solenoid is reversed in 0.25 s.

A solenoid has 2000 turns would over a length of 0.30 m. The area of its cross-section is 1.2xx10^(-3)m^(2) . If an initial current of 2 A in the solenoid is reversed in 0.25 s, then the emf induced in the coil is