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Earn 100

1 kWh (Kilo Watt Hour) is equivalent to _____ mega Joules.

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Important Questions on Work, Energy and Power

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Science>Physics>Work, Energy and Power>Types of Energy
MeV c-2 is a unit of
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Science>Physics>Work, Energy and Power>Types of Energy
The formula of Power is :
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Science>Physics>Work, Energy and Power>Types of Energy
Which of the following terms does not represent electric power in a circuit?
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Science>Physics>Work, Energy and Power>Types of Energy
From a power station, the power is transmitted at a very high voltage because _____.
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Science>Physics>Work, Energy and Power>Types of Energy
Transformers are used in between the electric power stations and homes or factories in order to:
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Science>Physics>Work, Energy and Power>Types of Energy
A unit of power is called _____.
MEDIUM
Science>Physics>Work, Energy and Power>Types of Energy
A bulb 200 V, 200 W is connected to a voltage of 100 V. The power dissipation is _____.
EASY
Science>Physics>Work, Energy and Power>Types of Energy
Which of the following is a natural magnet?
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Science>Physics>Work, Energy and Power>Types of Energy
A certain household has consumed 320 units of energy during a month. How much energy is this in joules?
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Science>Physics>Work, Energy and Power>Types of Energy
One watt = ?
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Science>Physics>Work, Energy and Power>Types of Energy

Electrical resistance and heating elements are made from _____.

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Science>Physics>Work, Energy and Power>Types of Energy
What is 1 Horse Power (HP)?
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Science>Physics>Work, Energy and Power>Types of Energy
1 kilowatt-hour is the amount of electric energy consumed when 1-kilowatt power is used for 1 hour in an electric circuit. Express it in joules.
EASY
Science>Physics>Work, Energy and Power>Types of Energy

Transformer is used to

1. Convert low AC voltage to high voltage

2. Convert high AC voltage to low voltage

3. Convert direct current to alternating current

4. Regulate the fluctuation of voltage

Select the correct answer using the codes given below:

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Science>Physics>Work, Energy and Power>Types of Energy
Electrical energy used during a month is expressed in terms of _______.
EASY
Science>Physics>Work, Energy and Power>Types of Energy
Electrical elements and heating elements are made up from_____.
MEDIUM
Science>Physics>Work, Energy and Power>Types of Energy
An AC generator of 220 V has internal resistance r=10Ω and external resistance R=100Ω. What is the power developed in the external circuit?
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Science>Physics>Work, Energy and Power>Types of Energy
Which statement is true?
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Science>Physics>Work, Energy and Power>Types of Energy
Cotyledons are also called-
EASY
Science>Physics>Work, Energy and Power>Types of Energy
Watt-hour meter measures _____.