A moving coil galvanometer has a coil with 175 turns and area `1 cm^(2)`. It uses a torsion band of torsion constant `10^(-6) N-m//rad`. The coil is placed in a magnetic field B parallel to its plane. The coil deflects by `1^(@)` for a current of 1 mA. The value of B (in Tesla) is approximately.
A flat coil carrying a current has a magnetic moment mu . It is placed in a magnetic field B such that mu is anti-parallel to B . The coil is
A coil is placed in a constant magnetic field. The magnetic field is parallel to the plane of the coil as shown in Fig. 3.28. Find the emf induced in the coil if B increasing.
A circular coil of 25 turns and radius 12 cm is placed in a uniform magnetic field of 0.5 T normal to the plane of the coil. If the current in the coil is 6 A then total torque acting on the coil is
A current i flows in a circular coil of radius r . If the coil is placed in a uniform magnetic field B with its plane parallel to the field, magnitude of the torque that acts on the coil is
A moving coil galvanometer has 100 turns and each turn has an area 2.0 cm^2 . The magnetic field produced by the magnet is 0.01 T . The deflection in the coil is 0.05 radian when a current of 10 mA is passed through it. Find the torsional constant of the suspension wire.
A circular coil of 20 turns and radius 10cm is placed in uniform magnetic field of 0.10T normal to the plane of the coil.If the current coil is 5A ,then the torque acting on the coil will be: ?
