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Now move the electric switch to the ‘ON’ position and let the bulb glow for a minute or so. Touch the bulb now. Do you feel the heat?

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Now move the electric switch to the ‘ON’ position and let the bulb glow for a minute or so. Touch the bulb now. Do you feel the heat?

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Yes, the bulb is hot because electrical energy is transformed to heat energy. This is known as heating effect of electric current.

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