Question

Short circuit occurs

• A. When a live wire comes in contact with an earthing wire and the resistance of the circuit falls drastically
• B. When a live wire comes in contact with a neutral wire and the resistance of the circuit increases drastically
• C. When a live wire comes in contact with a neutral wire and the resistance of the circuit falls drastically
• D. When a neutral wire comes in contact with an earthing wire and the resistance of the circuit increases drastically
• E. When a neutral wire comes in contact with an earthing wire and the resistance of the circuit falls drastically

Answer 1

The correct option is C

When a live wire comes in contact with a neutral wire and the resistance of the circuit falls drastically

When a live wire comes in contact with a neutral wire the resistance of the circuits fall drastically & a large amount of current flows in the circuit. Short circuit can be caused due to breaking of insulation of the wires or water forming the contact between the live wire & neutral wire. The large current generated can cause fire.