Question

(i) A magnetic field can exert force on a:-
(a) moving magnet
(b) stationary magnet
(c) moving charge
(d) all of these
(ii) The magnetic field lines due to a straight wire carrying a current are:-
(a) straight
(b) circular
(c) parabolic (d) elliptical
(iii) The magnetic field lines inside a long current carrying solenoid are nearby:-
(a) straight
(b) circular
(c)parabolic (d) elliptical
(iv) Which of the following describes the common domestic power supplied in India?
(a) 220 V, 100 Hz (b) 110 V, 100 Hz
(c) 220 V, 50 Hz (d) 110 V, 50 Hz​

Answer 1

i) all of these

ii) straight

iii) i don't know this

iv)110V,100Hz