When the switch S is closed in the given circuit, the current passed through it is

Options

A. `2 A `
B. `1A `
C. `0.6A`
D. zero

Answer

A

Explanation

We have, `(10 -V)/(4) + (5 -V)/(2) = (V-0)/(2) and I _(3) + I _(2) = I _(1)`
Which gives, ` (10 - V)/(2) + (5 -V)(1) = V`
or ` 10 - V+ 2 (5-V) = 2V`
or `20=5 V`
or V =4 volt
`therefore I _(3) = 4/2 = 2A`