# Question #b95b1

##### 1 Answer

Oct 4, 2016

Let the resistance of the original coil of electromanet be

For given V = 122V and I =12A

**(a)** Let

So

**(b)** Let

So

Oct 4, 2016

Let the resistance of the original coil of electromanet be

For given V = 122V and I =12A

**(a)** Let

So

**(b)** Let

So