Question

3. A battery lights a bulb. Describe the energy changes involved in the process.
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Answer 1

Explanation:

When a battery lights a bulb, first energy transformation takes place in the battery and then in the bulb. In the battery, the chemical energy gets converted into electrical energy. In the bulb, the electrical energy from the bulb gets converted into heat energy and then into light energy.

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Answer 2

stored chemical energy to electrical energy to heat energy and light energy.

Explanation:

stored chemical energy in the battery is converted to electrical energy that is in turn converted to heat and light energy in the filament of the bulb.