Let 's calculate the heat developed when 3A current flows through an electric iron box designed to work under '230 V'.

Factors influencing the heat developed when a current passes through a conductor.

Let 's find out the heat developed in 3 minute by a device of resistance 920 Omega working under 230 V.

A current of 0.4 A flows through an electricf bulb working at 230 V . What is the power of the bulb ?

0.5 A current flows through an electric heating device connected to 230 V supply . Calculate the quantity of heat generated when current flows in the circuit for 5 minute.

When electric current is passed through a resis tance wire, it get heated up" What happens to the heat energy developed, if the current through the wire is doubled.

Power of an electric heater working in 230 V is 1000W. Calculate the heat produced if the current passes for 5 minutes through the circuit .