An electric motor takes $ 5 \mathrm{~A} $ from a $ 220 \mathrm{~V} $ line. Determine the power of the motor and the energy consumed in $ 2 \mathrm{~h} $.

AcademicPhysicsNCERTClass 10

Here given,

Current $i=5\ A$

Voltage $V=220\ Volt$

Time $t=2\ hour=2\times60\times60=7200\ s$

So, the power of the motor $P=Vi$

$=220\ Volt\times 5\ A$

$=1100\ Watt$

$=1.1\ kW$                 [we know that $1\ kW=1000\ Watt$]

So, energy consumed by the motor $E=Pt$

$=1.1\ kW\times 2\ hour$

 $=2.2\ kWh$

Therefore, the electric motor consumed $2\ kWh$ energy in $2\ hours$.

raja
Updated on 10-Oct-2022 13:33:38

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