Do you know what is common between an electric eel, a bolt of lightning, and a glowing bulb? It is electricity! An electric eel is a fish that makes its own electricity, Lightning is spark of electricity in the air and bulb uses electricity to glow. Electricity is a form of energy produced by charges. It is difficult to imagine our life without electricity.
An electric circuit is closed path in which current flows. It comprises of electric components (cell or battery, bulb, switch, resistors ). Learn to make different electrical circuits.
Relation between potential difference and current is given by Ohm's Law - " It states that the current flowing through a conductor at constant temperature is directly proportional to the potential difference across the conductor."
I ∝ V
I = V/R, where R = constant
Learn to save electrical appliances from excessive current by using electric fuse. Current can rise due to following reasons :