Home
Class 12
PHYSICS
The charge, which will flow through a 20...

The charge, which will flow through a 200 `Omega` galvanometer connected to a 400 `Omega` circular coil of 1000 turns wound on a wooden stick 20 mm in diameter, if a magnetic field `B=0.012T` parallel to the axis of the stick decreased suddenly to zero is

A

`6.3 muC`

B

`63muC`

C

`0.63 muC`

D

`630 muC`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Similar Questions

Explore conceptually related problems

A moving coil galvanometer consists of a coil of N turns are area A suspended by a thin phosphor bronze strip in radial magnetic field B. The moment of inertia of the coil about the axis of rotation is l and c is the torsional constant of the phosphor bronze strip. When a current i is passed through the coil, it deffects through an angle theta When a charge Q is almost instantly through the coil the angular speed omega acquired by the coil is

A moving coil galvanometer has a 50-turn coil of size 2cm xx 2cm . It is suspended between the magnetic poles producing a magnetic field of 0.5 T . Find the torque on the coil due to the magnetic field when a current of 20mA passes through it.

A tangent galvanometer has a coil of 50 turns and a radius of 20cm. The horizontal component of the earth's magnetic field is B_H = 3 xx 10^(-5) T . Find the current which gives a diflection of 45^@) .

A small coil is introduced between the poles of an electromagnet so that its axis coincides with the magnetic field direction. The cross-sectional area of the coil is equal to S = 3.0 mm^2 , the number of turns is N = 60 . When the coil turns through 180^@ about its diameter, a galvanometer connected to the coil indicates a charge q = 4.5muC flowing through it. Find the magnetic induction magnitude between the poles, provided the total resistance of the electric circuit equals R = 40 Omega .

Magnetic field due to 0.1 A current flowing through a circular coil of radius 0.1 m and 1000 turns at the centre of the coil is

A conducting circular loop of radius r is rotated about its diameter at a constant angular velocity omega in a magnetic field B perpendicular to the axis of rotation. In what position of the loop is the induced emf zero?

The moving coil of a galvanometer 4 cm long and 1.5 cm wide, made of 200 turns of thin wire, works in a magnetic field with induction of 0.1 T. The plane of the coil is parallel to lines of induction. Find the torque acting on the coil when a current of 1 mA flows in it.

A closed circular loop of 200 turns of mean diameter 50 cm & having a total resistance of 10 Omega is placed with its plane at right angle to a magnetic field of strength 10^(-2) Tesla.Calculate the quantity of electric charge passed through it when the coil is turned through 180^(@) about an axis in its plane.

A circular ring of diameter 20cm has a resistance 0.01Omega How much charge will flow through the ring if it is rotated from positon perpendicular to the uniform magnetic field of B=2T to a position parallel to field?

A moving coil galvanometer has 50 turns and each turn has an area 210 . The magnetic field produced by the magnet inside the galvanometer is 0.02 . The torsional constant of the suspension wire is 10 . When a current flows through the galvanometer, a full scale deflection occurs if the coil rotates by 0.2 . The resistance of the coil of the galvanometer is 50 . This galvanometer is to be converted into an ammeter capable of measuring current in the range 01.0 . For this purpose, a shunt resistance is to be added in parallel to the galvanometer. The value of this shunt resistance, in , is __________.