Toppers and exam experts suggest that aspirants should have clarity in concepts of subjects including Physics, Chemistry and Physics. They recommend that aspirants should thoroughly brush and ...

Car batteries, dry cells and solar cells all provide a direct current (dc) that only flows in one direction. An alternating current regularly changes direction. On a voltage-time graph ...

To ensure that the minimum amount of power is lost from the cables: the cables are thick so that their resistance is low high voltages are used to reduce the current through the transmission lines ...