The magnitude of the magnetic Lorentz force does not depend on ______

(a)

mass of the charged particle

(b)

velocity of the charged particle

(c)

magnetic induction

(d)

direction of motion of the charged particle

Force on unit length of two parallel wires carrying equal current kept apart by 3m in air is 2 x10^-7 N, then the current in each wire is ______

(a)

1A

(b)

3A

(c)

\(\sqrt { 3 } \)A

(d)

\(\sqrt { 2 } \)A

No current flows between two charged particles when connected if they have same ______

(a)

capcity

(b)

potential

(c)

charge

(d)

none of these

Torque acting on a coil is maximum when the coil is ______

(a)

parallel to the magnetic field

(b)

perpendicular to the magnetic field

(c)

at an angle of 45° to the magnetic field

(d)

at any position in a uniform magnetic field

If a current 0.5mA produces a deflection of 156°, then the galvanometer constant is about, ______

(a)

0.33 A rad^-1

(b)

2 A rad^-1

(c)

3 A rad^-1

(d)

7.5 A rad^-1