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A heating coil has a resistance …

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A heating coil has a resistance of 200W.At what rate will heat be produced in it when a current of 2-5A of flow through it?

Posted by Pooja Kumari ?????? 5 years, 8 months ago

CBSE > Class 10 > Science

1 answers

Yogita Ingle 5 years, 8 months ago

When current I is passing through a resistor R, the electric power that generates heat is given by the formula I²R. so, P= I²R

Here P is power/heat produced,I is current and R is resistance.

P = (2.5)²X 200

= 6.25 x 200

= 1250 Watts.

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