Q. Calculate the value E, for given circuit, when value of 2A current is either flowing in clockwise or anticlockwise direction
A) 32 V, 8V
B) 38V, 2V
C) 32V, 2V
D) 30V, 8V
Explanation
(a) Given current $I = 2A$
(i) If current is in clockwise direction then from Kirchhoff’s second law
$6 \times 2 + 20 - E = 0$
$\Longrightarrow \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ E = 32V$
(ii) If the current is in anticlockwise direction, then
$6 \times 2 + E - 20 = 0$
$\Longrightarrow \ \ \ E - 8 = 0$
E=8
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.