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10th ICSE
IMPORTANT
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A fuse is always connected to the live wire of the circuit. Explain the reason.

Important Questions on Electrical Power and Household Circuits

EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 9 - Electrical Power and Household Circuits>EXERCISE-9(C)>Q 8
Two fuse wire of same length are rated 5 A and 20 A. Which of the two is thicker and why?
EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 9 - Electrical Power and Household Circuits>EXERCISE-9(C)>Q 9
Explain the meaning of the statement 'the current rating of a fuse is 5 A'.
EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 9 - Electrical Power and Household Circuits>EXERCISE-9(C)>Q 10
'A fuse is rated 8 A'. Can it be used with an electrical appliance of rating 5 kW,200 V
EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 9 - Electrical Power and Household Circuits>EXERCISE-9(C)>Q 11
An electric kettle is rated 3 kW, 250 V. give reason whether this kettle can be used in a circuit which contains a 13 A fuse.
EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 9 - Electrical Power and Household Circuits>EXERCISE-9(C)>Q 12
What is the purpose of a switch in a circuit ? Why is the switch put in the live wire ? What precaution do you take while handling a switch?
EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 9 - Electrical Power and Household Circuits>EXERCISE-9(C)>Q 13
A switch is not touched with wet hands while putting it on or off. Give a reason for your answer.
EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 9 - Electrical Power and Household Circuits>EXERCISE-9(C)>Q 14
Draw a circuit diagram using the dual control switches to light a staircase electric light and explain its working.
EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 9 - Electrical Power and Household Circuits>EXERCISE-9(C)>Q 15

The diagram in figure shows a three pin plug. Label the three pins.
Why is the top pin thicker and longer than the other two ?

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