EASY
12th CBSE
IMPORTANT
Earn 100

Of which physical quantity is the unit kilowatt hour?

Important Questions on Current Electricity

EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 3 - Current Electricity>Text Based Exercises>Q 60
What do you mean by 1 unit of electric energy in domestic use ?
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 3 - Current Electricity>Text Based Exercises>Q 61
How many joules of energy are equivalent to 1kWh?
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 3 - Current Electricity>Text Based Exercises>Q 62
How many kilowatt hours (kWh) are there in one joule?
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 3 - Current Electricity>Text Based Exercises>Q 63
The applied p.d. across a given resistance is altered so that heat produced per second increases by a factor of 9. By what factor does the applied p.d. change ?
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 3 - Current Electricity>Text Based Exercises>Q 64
Two electric bulbs are rated at 220 V-100 W and 220 V-60 W. Which one of these has greater resistance and why ?
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 3 - Current Electricity>Text Based Exercises>Q 65
The maximum power dissipated in a 10,000Ω resistor is 1 W. What is the maximum current?
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 3 - Current Electricity>Text Based Exercises>Q 66
What is the safest voltage you can safely put across a 98Ω,0.5 W resistor ?
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 3 - Current Electricity>Text Based Exercises>Q 67
How much charge flows through a 250 V,1,000 W heater in one minute ?