A battery lights a bulb. The energy change involved in the process is given by:

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Chemical energy → Electrical energy → Light energy → Heat energy

Electrical energy → Chemical energy → Light energy → Heat energy

Chemical energy → Electrical energy → Light energy + Heat energy

Electrical energy → Chemical energy → Heat energy + Light energy

answer is B.

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Detailed Solution

The battery converts its chemical energy into electrical energy when it is connected to a bulb. The electrical energy then flows through the filament of the bulb, causing it to heat up and glow. The heat energy from the filament causes the bulb to emit light energy.

A small amount of the electrical energy is also converted into heat energy, which is why a light bulb gets hot when it is turned on.

Here is a diagram of the energy changes taking place when a battery lights a bulb:

Battery (chemical energy) → Bulb (electrical energy → light energy + heat energy)

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