Question

In the figure given below, the value of Resistance R by Norton’s Theorem is ___________

(a) 40

(b) 20

(c) 50

(d) 80

Answer 1

Right option is (b) 20

The best explanation: (frac{V_P-100}{10} + frac{V_P}{10}) + 2 = 0

Or, 2VP – 100 + 20 = 0

∴ VP = 80/2 = 40V

∴ R = 20Ω (By Norton’s Theorem).