Question

In the circuit shown above, the conductor XY is of negligible resistance. Then

(a) current will flow through XY if ℰ₁ ≠ ℰ2

(b) current will flow through XY if ℰ₁/R₁ ≠ ℰ₂/R₂

(c) current will flow through XY if ℰ₁ + ℰ₂ ≠ R₁ + R₂ ≠ |ℰ₁ - ℰ₂| R₁ - R₂

(d) no current will flow through XY

Comments

Current can flow in a circuit or part of a circuit only when it has a ‘return path’, i.e., it can return to its starting point. Here, current flowing from X to Y cannot return to X.

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Answer 1

Correct Answer is: (d) no current will flow through XY

Current can flow in a circuit or part of a circuit only when it has a ‘return path’, i.e., it can return to its starting point. Here, current flowing from X to Y cannot return to X.