What are the values of E in the following circuit, if a current of 2 A flows in the clockwise as well as in anticlockwise direction ?

Options

A. 3 V, 28 V
B. 38 V, 2V
C. 3V, 30V
D. 3V, 2.8 V

Answer

B

Explanation

If the current of 2 A flows in the clockwise direction,
`E gt 20 V`
`therefore E-20=2xx6+3xx2=18`
`therefore E=38 V`
But if the current of 2 ?A flows in the anticlockwise direction, then `20 V gt E`
`therefore 20-E=2xx6+3xx1=18`
`therefore E=2V`