2022 · Q101
At the time of short circuit, the current in an electric circuit
general-sciencephysics-light-electricity
- Abecomes zero
- Bremains same
- Cincreases sharply
- Ddecreases sharply
Explanation
A short circuit connects the terminals of a source through a near-zero-resistance path. By Ohm's law (I = V/R), the current rises sharply as the resistance collapses. This huge current can overheat wires and start fires, which is why circuits use fuses or MCBs that break the circuit when current exceeds a safe limit.