Question

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

• A. Current will flow through XY if e₁¹e₂
• B. Current will flow through XY if $\frac { \varepsilon _ { 1 } } { \mathrm { R } _ { 1 } }$ ¹ $\frac { \varepsilon _ { 2 } } { \mathrm { R } _ { 2 } }$
• C. Current will flow through XY if $\frac { \varepsilon _ { 1 } + \varepsilon _ { 2 } } { \mathrm { R } _ { 1 } + \mathrm { R } _ { 2 } }$ ¹ $\frac { \left| \varepsilon _ { 1 } - \varepsilon _ { 2 } \right| } { \mathrm { R } _ { 1 } - \mathrm { R } _ { 2 } }$
• D. No current will flow through XY

Answer 1

Answer: (D)

No current will flow through XY

Answer 2

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 a current flowing from X to Y cannot return to X.