WorksheetsHousehold Circuits
Total questions: 10
Worksheet time: 5mins
What would happen if electricity is transmitted at low voltage but has a higher value of current?
Electricity cannot be transmitted
minimum loss of energy
greater loss of energy
What is the unit in which electrical energy is expressed in the monthly bill?
joule
kilowatt-hour
kilowatt
What is the green insulated wire known as?
live wire
earth wire
neutral wire
Which of the following represents properties of a fuse wire?
high resistance and high melting point
high resistance and low melting point
low resistance and high melting point
Which of the following is a more accurate cause of short circuit?
direct connection between live and neutral wire
direct connection between neutral and earth wire
simultaneous use of many high power rating appliances
The risk of overheating is avoided in case of high tension wires because
the high tension wires provide large surface area to dissipate heat
the high tension wires are made up of special wires that prevent overheating
the high tension wire consists of a single thick wire that dissipates heat efficiently
A switch in an electrical circuit should always be connected to the
live wire
earth wire
neutral wire
What is the resistance of an electrical appliance having a rating of 200 W, 120 V
1.7 ohm
24000 ohm
72 ohm
1 horsepower =
100 W
746 W
1000 W
The energy used by a 30 W bulb which is switched on for 4 hours is
120 kWh
0.12 kWh
1.2 kWh
