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The armature of dc motor has 20Omega res...

The armature of dc motor has `20Omega` resistance. It draws current of `1.5` ampere when run by `220` volts dc supply.
the value of back e.m.f. induced in it will be

A

`150 V`

B

`170 V`

C

`180 V`

D

`190 V`

Text Solution

Verified by Experts

The correct Answer is:
D
`i=(E-e)/(R )implies1.5=(220-e)/(20)impliese=190V`
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