Question

calculate (a) total resistance
(b)total current drawn from the battery (c) potential difference between b and c​

Answer 1

Answer:

a)1 ohm b) 12 A

Explanation:

combine the resistors R1 and R2 as R

R1 + R2 = 15 ohm now combine R3 and R4 as R'

R3 + R4 = 15 ohm

R×R' = R × R'/ R + R' = 15 ×15 / 15 + 15 = 1 ohm

total current = 12v/ 1 ohm = 12 A