Question

When some potential difference is maintained between A and B, current I enters the network at A and leaves at B. Find
i) the current flowing between C and D.
ii) the equivalent resistance between A and B.

Answer 1

i) As C and D are joined by a connecting wire, they are at the same potential and no current will flow between C and D.
ii) Req = (20 || 5) + (20 || 5) = 4 + 4 = 8 ohms