alleryStart learning →A short circuit occurs when
Atoo many appliances are switched off
Bthe earth wire is connected
Cthe live and neutral wires touch directly
Dthe supply voltage falls
Answer & Solution
Correct answer: C. the live and neutral wires touch directly
1. If the insulation fails and the **live wire touches the neutral wire** directly, the resistance becomes almost zero.
2. A very large current then flows (a short circuit), which can cause fire.
3. The fuse melts to break such a circuit.
_Source: Karnataka SSLC (KSEEB) Class 10 Science, Ch13 'Magnetic Effects of Electric Current', §13.6_
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