Question

In the figure given below, the value of Resistance R by Superposition Theorem is ___________

(a) 10

(b) 20

(c) 30

(d) 40

Answer 1

Right choice is (b) 20

To elaborate: Using Superposition theorem, we get,

(frac{V_P-100}{10} + frac{V_P}{10}) + 2 = 0

Or, 2VP – 100 +20= 0

∴ VP = 80/2 = 40V

∴ R = 20Ω.