ICSE Class 7 Answered

When an electric current is passed through a wire that has high resistance, like a nichrome wire, the wire becomes hot and produces heat. This phenomenon is known as the heating effect of current.

For instance, when an incandescent bulb is connected to a circuit, a current flows through a thin wire in the bulb, generating both heat and light.

The heat produced in the wire depends on its material, length, and thickness.

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