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(i) Why is fuse an important component in our electric circuits ?
(ii) Distinguish between overloading and short-circuiting of a circuit.
(iii) Giving reason explain what type of materials are used in fuse wires.
(ii) Distinguish between overloading and short-circuiting of a circuit.
(iii) Giving reason explain what type of materials are used in fuse wires.
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(i) Because it is a safety device, which prevents the damage to electric appliances and circuit caused due to overloading. (1 Mark)
(ii)
Over loading: It is caused when too many appliances are connected to a single socket./ Due to accidental hike in the supply voltage.
Short circuiting: It is caused due to direct contact of live wire with the neutral wire. (2 Marks)
(iii) • A piece of wire made of a metal or an alloy. (1 Mark)
• appropriate (low) melting point. (1 Mark)
(ii)
Over loading: It is caused when too many appliances are connected to a single socket./ Due to accidental hike in the supply voltage.
Short circuiting: It is caused due to direct contact of live wire with the neutral wire. (2 Marks)
(iii) • A piece of wire made of a metal or an alloy. (1 Mark)
• appropriate (low) melting point. (1 Mark)