Question

The figure shows part of an electric circuit. The potential difference V_A - V_B is ______. 

विकल्प

• 9.0 V

• 7.5 V

• 6.0 V

• 4 .5 V

Answer 1

The figure shows part of an electric circuit. The potential difference V_A - V_B is 7.5 V. 

Explanation:

V_A+ (8V)- (0.5A) (4Ω)- (12 V)- (0.5 A) (3Ω) =V_B)

V_A + 8 - 2 - 12 - 1.5 = V_B

∴  V_A - 7.5 = V_B

∴ V_A-V_B = 7.5