What do we need to apply across a bulb to cause a current to flow through it?

We need to apply voltage from a battery across a bulb to cause a current to flow through it.

Without power or a source of current, a current cannot flow through the bulb and make it glow. A voltage or its source, a battery or cell is applied across or in parallel to a bulb to make current flow through the bulb.

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Updated on: 10-Oct-2022

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