Question

20 y 20
5 V
m
142. When the switch S is closed
20 Y
in the circuit shown in
figure, the current passing
through it is
(a) 7.5 A
(b) 3,0 A
(c) 4.5 A
( 6.5 A
$
222
S​

Answer 1

Explanation:

let consider voltage at node between 2 and 4 is V

(V-20) /2 + (V/2) + (V-5) /4 = 0

2V-40+2V+V-5=0

5V =45

V=9

I=9/2=4.5A

Answer 2

plz follow or make me brainlist.