How much force is experienced by a `beta` - particlw when it is projected along a magnetic field of 1.4 T? (write the answer only)

How much is the charge deposited on the capacitor of 10 muF charged to a potential of 100 V? (write the answer only).

A circular coil of 100 turns has radius 4 cm. It is placed with its plane perpendicular to a magnetic field of 3T. If the magnetic field, reduces to 1 T in 0.2s, calculate the e.m.f induced in the coil.