EASY
10th CBSE
IMPORTANT
Earn 100

Which quantity has the unit of watt?

Important Questions on Electricity

EASY
10th CBSE
IMPORTANT
Science for Tenth Class Part - 1 Physics>Chapter 1 - Electricity>Very Short Answer Type Questions>Q 8
What is the meaning of the symbol kWh? Which quantity does it represent?
EASY
10th CBSE
IMPORTANT
Science for Tenth Class Part - 1 Physics>Chapter 1 - Electricity>Very Short Answer Type Questions>Q 9
If the potential difference between the end of a wire of fixed resistance is doubled, by how much does the electric power increase?
EASY
10th CBSE
IMPORTANT
Science for Tenth Class Part - 1 Physics>Chapter 1 - Electricity>Very Short Answer Type Questions>Q 10
An electric lamp is labelled 12 V, 36 W. This indicates that it should be used with a 12 V supply. What other information does the label provide?
EASY
10th CBSE
IMPORTANT
Science for Tenth Class Part - 1 Physics>Chapter 1 - Electricity>Very Short Answer Type Questions>Q 11
What current will be taken by a 920 W appliance if the supply voltage is 230 V?
EASY
10th CBSE
IMPORTANT
Science for Tenth Class Part - 1 Physics>Chapter 1 - Electricity>Short Answer Type Questions>Q 12
Define watt. Write down an equation linking watts, volts and amperes.
EASY
10th CBSE
IMPORTANT
Science for Tenth Class Part - 1 Physics>Chapter 1 - Electricity>Short Answer Type Questions>Q 13
Define watt-hour. How many joules are equal to 1 watt-hour?
EASY
10th CBSE
IMPORTANT
Science for Tenth Class Part - 1 Physics>Chapter 1 - Electricity>Short Answer Type Questions>Q 14
How much energy is consumed when a current of 5 amperes flows through the filament (or element) of a heater having a resistance of 100 ohms for two hours? Express it in joules.
EASY
10th CBSE
IMPORTANT
Science for Tenth Class Part - 1 Physics>Chapter 1 - Electricity>Short Answer Type Questions>Q 15
An electric bulb is connected to a 220 V power supply line. If the bulb draws a current of 0.5 A, calculate the power of the bulb.