The magnitude of I in ampere unit

Options

A. 0.1
B. 0.3
C. 0.6
D. none of these.

Answer

a

Explanation

From circuit, using voltage is same in all three branches.`60I - 20I_(1)`
`20I_(1) = 10(I - I-I_(1))`
`20I_(1)=10-10I_(1)-10I`
`implies30I_(1)=10-10IimpliesI_(1)=(10(I-I)/(30))`
Substituting value in equation (i),`60I - (20(1-I)/(3)) implies 9I = 1-I implies I = 0.1 A`