a current of 12a flows in the element of an


A current of 12A flows in the element of an electric fire of resistance 25?.

Verify the power dissipated by the element. If the ?re is on for 5 hours every day, measure for a one week period

(a) The energy used, and

(b) Cost of using the ?re if electricity cost 13.5 p per unit.

 

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Physics: a current of 12a flows in the element of an
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