Question

Which of the two switches $S_1$ and $S_2$ shown in figure will produce short-circuiting?

• A. $S_1$
• B. $S_2$
• C. Both $S_1$ and $S_2$
• D. Neither $S_1$ nor $S_2$

Answer 1

The correct option is B $S_2$

When $S_1$ is closed, the current will also flow through the resistor. So it will not produce short circuit.
When switch $S_2$ is closed, the whole of current shall flow through the connecting wire only, which is suppose to have zero resistance. Thus, it will make short-circuit.