Electric potential difference (V) is defined as the work done (W) to move a unit charge (Q) from one point to another. The formula is V = W/Q.

Electricity is controllable and convenient for diverse applications in homes, schools, hospitals, and industries.

Overloading can occur due to an accidental increase in supply voltage or by connecting too many appliances to a single socket.

Short-circuiting occurs when the live and neutral wires come into direct contact due to damaged insulation or appliance faults.

One volt is the potential difference between two points in a current-carrying conductor when 1 joule of work is done to move a charge of 1 coulomb from one point to the other.