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WorksheetsDomestic electric circuit
Total questions: 10
Worksheet time: 8mins
Electric Meter is used in the circuit to:
Reduce the electricity Usage
Track the electricity usage
Increase the electricity usage
None of these
Primary advantage of Earth (ground wire) is
To provide return path to the current
To supply current in the circuit
To provide a low resistance path to the stray currents in the metal body
None of these
Live wire is generally the wire with
Red Insulation
Green Insulation
Black Insulation
Yellow Insulation
Which of the following wires has a potential of 220V?
Neutral Wire
Earth Wire
Live Wire
All of the above
Earth wires are particularly important if the case of an appliance is made of ______
Metal
Plastic
Wood
Rubber
If the earth wire is damaged...
The user will suffer from electric shock
The appliance won't work
The appliance will overheat
Q2. Why Nichrome is used for making wires of heating coils?
1.High melting point and low resistivity.
2.Low resistivity and high melting point.
3.High resistivity and high melting point.
4. It can get oxidised easily and have high melting point
Q3. Which among the following are the advantages of heating effect of current?
1.Can be used in electric fuse
2.Increases the life of several appliances in the circuit.
3.It helps in preventing loss of energy.
Q5. Tungsten is used for the manufacture of an electric bulb because
A)it is malleable
B) it is inexpensive
C) it has a very high melting point
D) it is a good conductor
Q6. Current in an electric circuit can exceeds it’s maximum limit when,
1.One device is connected to the socket.
2.Touching of two neutral wires.
3.Insulation break down.
4.Touching of two live wires.
