Question

An electric heater is rated 1500 W how much energy does it use in 15 sec

Answer 1

Solution:

Here,power=1500 watt

time=15 sec.

Then,Using formula of power,

Power=Work done÷time taken

1500=Work done÷15

1500×15=Work done

Therfore,Energy usages=22500 joules

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