Question

A battery lights a bulb. Describe the energy changes involved in the process.

Answer 1

Explanation of Battery:

1. A battery consists of two electrodes, a cathode, and an anode.
2. Inside a battery chemical reaction occurs.
3. As a result of which electrons flow from the anode to the cathode through an external circuit.
4. We know that the rate of flow of electrons generates a current.
5. In order to keep this flowing flowing current charged ions inside the battery flow from cathode to anode.
6. In this way, a steady current is maintained in the circuit.
7. If a bulb is connected to the circuit, this steady current passes through it.
8. As a result, the bulb lights up.

Hence, a battery lights a bulb by converting chemical energy into electric energy.