In moving coil galvnometer a current f 2A for radial magnetic field of ` 4xx 10^(-3) Wb/m^(2)` produces some deflection. FI the field is doubled by keeping all other quantities same, the current for the same deflection will be

The coil of a moving coil galvanometer has an effective area of 4xx10^(-2)m^(2) . It is suspended in a magnetic field of 5xx10^(-2) Wb m^(-2) . If deflection in the galvanometer coil is 0.2 rad when a current of 5 mA is passed through it, then

The coil of a moving coil galvanometer has an effective area of 4x 10^(-2) m^(2) . It is suspended in a magnetic field of 5x 10^(-2) Wb m^(-2) . If deflection in the galvanometer coil is 0.2 rad when a current of 5 mA is passed through it, then

A 100 turns coil shown in figure carries a current of 2 amp in a magnetic field B=0.2 Wb//m^(2) . The torque acting on the coil is

A 100 turns coil shown in figure carries a current of 2 amp in a magnetic field B=0.2 Wb//m^(2) . The torque acting on the coil is

A 100 turns coil shown in figure carries a current of 2 amp in a magnetic field B=0.2 Wb//m^(2) . The torque acting on the coil is

A coil of 10 cm radius, carrying a current of 1 A produces magnetic field of induction 6.284xx10^(-3)Wb//m^(2) at its cente. What is the number of turns of the coil ?

A rectangul ar coil of wire of 100 turns and 10 xx 15cm^(2) size carrying a current of 2Amp. is in a magnetic field of induction 2 xx 10^(-3)wb//m^(2) . If the normal drawn to the plane of the coil makes an angle 30° with the field, then the torque on the coil is

If a current of 4A produces a magnetic flux of 10^(-3) Wb per turn in a coil of 1000 turns, then the self inductance of the coil is