MEDIUM
8th ICSE
IMPORTANT
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How are the electrical appliances connected in a household circuit: in series or in parallel? Give reason.

Important Questions on Electricity

MEDIUM
8th ICSE
IMPORTANT
Concise Physics Middle School for Class 8>Chapter 8 - Electricity>TEST YOURSELF>Q B
In the household electric circuit, if one bulb is fused in a room, the other bulbs keep glowing. Explain the reason.
EASY
8th ICSE
IMPORTANT
Concise Physics Middle School for Class 8>Chapter 8 - Electricity>TEST YOURSELF>Q B
State the voltage at which electricity is supplied to our houses.
MEDIUM
8th ICSE
IMPORTANT
Concise Physics Middle School for Class 8>Chapter 8 - Electricity>TEST YOURSELF>Q B
Draw a labelled diagram with the necessary switches to connect a bulb, a fan and a plug socket in a room with the mains. In what arrangement will you connect them to the mains?
EASY
8th ICSE
IMPORTANT
Concise Physics Middle School for Class 8>Chapter 8 - Electricity>TEST YOURSELF>Q B
State the colour coding of the three wires in a cable used for wiring in a household electrical circuit.
MEDIUM
8th ICSE
IMPORTANT
Concise Physics Middle School for Class 8>Chapter 8 - Electricity>TEST YOURSELF>Q B
Why is the metal covering of an electrical appliance earthed?
EASY
8th ICSE
IMPORTANT
Concise Physics Middle School for Class 8>Chapter 8 - Electricity>TEST YOURSELF>Q C
An electrical appliance is rated as 60 W–150 V. What do you understand by this statement?
EASY
8th ICSE
IMPORTANT
Concise Physics Middle School for Class 8>Chapter 8 - Electricity>TEST YOURSELF>Q C
An electrical appliance is rated as 60 W–150 V. How much current will flow through the appliance when in use?
EASY
8th ICSE
IMPORTANT
Concise Physics Middle School for Class 8>Chapter 8 - Electricity>TEST YOURSELF>Q C
An electric iron of power 1.5 kW is used for 30 minutes to press the clothes. Calculate the electrical energy consumed in kilowatt-hour.