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An electric motor takes 5 A form a 220 V...

An electric motor takes 5 A form a 220 V line. Determine the power of the motor and the energy consumed in 2 h.

Text Solution

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Power = VI
`P=200xx5`
Energy = Power `xx` Time
`=1100 xx 2h xx 3600`sec
`=3960000`
`=3.96 xx 10^(6)` Joule
`=3.96 xx 10^(3)` Kilojoule
`:. (V_(1))/(V_(2))=(I_(1))/(I_(2))`
Given, `V_(1)=2V_(2)`
`:. (V_(1))/(V_(2))=(I_(1))/(I_(2))`
`rArr (2V_(2))/(V_(2))=(I_(1))/(I_(2))`
`rArr I_(1)=2I_(2)`
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