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The batteries in a torch make the bulb light because they
- A Transmit electricity to the bulb through the air like radio waves
- B Give out chemicals which pass around the circuit and are used up
- C Push the electrons around the circuit in one direction
- D Make electrons flow outwards to the light bulb where they are used up
That's Correct!
It's Wrong!
The batteries in a torch push the electrons around the circuit in one direction. This is known as a direct current, where the flow of electrons is consistent and in a single path. As the electrons move through the circuit, they encounter the filament of the bulb, which offers resistance. This resistance causes the filament to heat up and emit light. Therefore, the batteries are responsible for creating a continuous flow of electrons that ultimately powers the light bulb in the torch.
