Question

an electric heater takes 6A current from 220V supply line. calculate The power of heater and electric energy comsumed by it in 2 hours.

Answer 1

As we know P=IV. So 6*220=.1320 watt or 1.320 kw

Energy by time =power

So 1320*2=2.640kwh

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Answer 2

Given :

Current through the heater , I = 6 A .

Voltage applied , V = 220 V .

To Find :

The power of heater and electric energy consumed by it in 2 hours.

Solution :

We know , power is given by :

$P=VI\\\\P=220\times 6 W\\\\P=1320\ W = 1.32\ kW$

Now , Energy is given by :

$E=Pt\\\\E=1.32\times 2 \ kWh\\\\E=2.64\ kWh$

Hence , this is the required solution .

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Power and energy

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