Physics
If out of the two lighted bulbs in a room, one bulb suddenly fuses, then:
- the other bulb will glow more
- the other bulb will glow less
- the other bulb will also fuse
- the other bulb will remain lighted and unaffected.
Household Circuits
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Answer
the other bulb will remain lighted and unaffected
Reason — The two bulbs are connected in parallel connection so that if one bulb gets fused other will glow without being affected. In household electrical circuits, all appliances are connected in parallel connection.
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Related Questions
When switch of an electrical appliance is put off, it disconnects:
- the live wire
- the neutral wire
- the earth wire
- the live and the neutral wires
The purpose of an electric meter in a house is:
- to give the cost of electricity directly
- to give the consumption of electrical energy
- to safeguard the circuit from electrical short circuit
- to put on or off the mains.
Fill in the blanks:
(a) The unit in which we pay the cost of electricity is …………… .
(b) The electrical energy consumed in a house is measured by …………… .
(c) In a household electrical circuit, the appliances are connected in …………… with the mains.
(d) A switch is connected to the …………… wire.
(e) The insulated wire in red color in a cable is the …………… wire.
(f) One kilowatt hour is equal to …………… joule.
(g) A fuse wire should have low …………… .
Write true or false for each statement:
(a) A fuse wire has a high melting point.
(b) Flow of protons constitutes electric current.
(c) A fuse wire is made of silver.
(d) S.I. unit and commercial unit of electrical energy are same.
(e) Overloading of electric current in circuits can lead to an electrical short circuit.
(f) Our body can pass electricity through it.
(g) The metallic cases of all appliances are insulators of electricity.
(h) The earth wire protects us from an electric shock.
(i) A switch should not be touched with wet hands.
(j) All electrical appliances in a household circuit work at the same voltage.
(k) In a cable, the green wire is the live wire.
(l) A fuse is connected to the live wire.
(m) A switch is connected to the neutral wire.