A battery lights a bulb. The electric energy on flowing through the filament of the bulb, first changes into ______ energy and then into the _______ energy.
A
heat; light
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B
light; heat
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C
mechanical; heat
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D
mechanical; light
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Solution
The correct option is A heat; light Within the electric cell or battery, the chemical energy changes into electrical energy. The electric energy on flowing through the filament of the bulb, first changes into heat energy and then into the light energy.