An electric current can flow in the wire from one end ... If the two or more cells point in the same direction, the more cells, the bigger the potential difference. In a television series, you ...

S cientists have found that it’s possible to generate electric power from Earth’s rotation through its own magnetic field ...

(A)The direction of the magnetic field at a point ... and give reason for the same in each case. (a) Magnitude of electric current in the wire is increased. (b) The compass needle is displaced ...