Two fuse wire of same length are rated 5 A and 20 A. Which of the two is thicker and why?
Question types
Electrical Power and Household Circuits question types
108 questions across 6 question groups — pick any mix to generate a Physics paper with step-by-step answer keys.
108
Questions
6
Question groups
5
Question types
01
[1 Mark Question Answer]
12 Q→02[2 Mark Question Answer]
15 Q→03[3 Mark Question Answer]
12 Q→04[5 Mark Question Answer]
16 Q→05MCQ
43 Q→06fill in the blanks.
10 Q→Sample Questions
Electrical Power and Household Circuits questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
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Why is the fuse wire fitted in a porcelain casing?
In following figure shows two bulbs with switches and fuse connected to mains through a socket.
How are the two bulbs joined: in series or in parallel?
How are the two bulbs joined: in series or in parallel?
Which of the cables, one rated 5 A and the other 15 A will be of thicker wire? Give a reason for your answer.
Give two characteristic of a high tension wire.
How does the (i) thickness and (ii) length of a fuse wire depend on its current rating
In following Figure shows two bulbs with switches and fuse connected to mains through a socket.
label each component
The following diagram shows three lamps and three switches 1, 2 and 3
(a) Name the switch / switches to be closed so as to light all the three lamps.
(b) How are the lamps connected: in series or in parallel?
(a) Name the switch / switches to be closed so as to light all the three lamps.
(b) How are the lamps connected: in series or in parallel?
Why is it necessary to have an earth wire installed in a power circuit, but not in a lighting circuit?
Name the colour code of the wire which is connected to (i) metallic body of an appliance, (ii) switch for the appliance.
In following figure shows two bulbs with switches and fuse connected to mains through a socket.Name and state the colour of insulation of each wire 1, 2 and 3.
Name the device used to protect the electric circuits from over loading and short circuit. On what effect of current does it work?
A power circuit uses a cable having three different wires.
(a) Name the three wires of the cable.
(b) to which of the two wires should the heating element of an electric geyser be connected?
(c) To which wire should the metal case of the geyser be connected?
(d) to which wire should the switch and fuse be connected?
(a) Name the three wires of the cable.
(b) to which of the two wires should the heating element of an electric geyser be connected?
(c) To which wire should the metal case of the geyser be connected?
(d) to which wire should the switch and fuse be connected?
What is the colour code for the insulation on the (a) live (b) neutral and (c) earth wire?
(a) the earthing of an electric appliance is useful only if the fuse is in the love wire. Explain the reason.
(b) Name the part of the appliance which is earthed.
(b) Name the part of the appliance which is earthed.
A fuse is always connected to the live wire of the circuit. Explain the reason.
Describe with the aid of a diagram some form of a fuse which is used in the electric lighting circuit of a house. Give two reasons why a fuse must not be replaced by an ordinary copper wire.
How is a fuse put in an electric circuit? State the purpose of using a fuse in a circuit.
State two circumstances when one may get an electric shock from an electrical gadget. What preventive measure must be provided with the gadget to avoid it?
To which wire is the metallic case of an electric appliance connected? give the reason?
A switch must be connected in :
- ✓Live wire
- BNeutral wire
- CEarth wire
- DEither earth or neutral wire
Answer: A.
View full solution →The rating of a fuse connected in the lighting circuit is :
- A15A
- ✓5A
- C10A
- DZero
Answer: B.
View full solution →The electric meter in a house records:
- ACharge
- BCurrent
- ✓Energy
- DPower
Answer: C.
View full solution →The electrical appliances in a house are connected in:
- ASeries
- ✓Parallel
- CEither in series or parallel
- DBoth in series and parallel
Answer: B.
View full solution →The main fuse is connected in :
- ✓Live wire
- BNeutral wire
- CBoth the live and earth wires
- DBoth earth and the neutral wire
Answer: A.
View full solution →Live wire is also called __________ wire.
Higher the current rating,_______ is the fuse wire.
A fuse is connected in …… with the ………..wire.
A fuse wire is made of an alloy of ………. and …..If the current in a circuit rises too high, the fuse wire ……….
Complete the following sentence:
(A fuse is a short piece of wire of material of high …………and low ………..
(A fuse is a short piece of wire of material of high …………and low ………..
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