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If your torch has an incandescent bulb in it, the resistance of the wire in the bulb generates enough heat that light is created.

If your torch has an LED bulb, the PN junction in the diode creates light when the diode is forward-biased.

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11y ago

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What happens when the torch is switched on?

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When a torch is switched on, the electrical energy stored in the battery is converted into light and heat energy by the bulb. The electrical energy flows through the circuit and causes the bulb’s filament to heat up, emitting light as a result of this process.


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When a torch is switched on, the electrical energy from the battery is converted to light energy and heat energy. The electrical energy powers the light source (such as LEDs or a bulb) to produce light, and a small portion of the energy is also dissipated as heat.


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How is energy transferred from the battery to the bulb of a torch or flashlight?

Energy is transferred from the battery to the bulb of a torch or flashlight through a closed circuit. When the battery is connected to the bulb, it provides electrical energy to the filament in the bulb, which then converts the electrical energy into light energy through the process of electrical resistance. This light energy is what produces the glow in the bulb.


What thing besides a torch can you make with one small bulb and three batteries?

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Can a tomato glow when connected to a light bulb?

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What is the job of the cells and wires and bulb and switch in a torch?

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