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Q 1.
Name the gas that is filled in bulb?
Ans.
Argon and Nitrogen.
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Q 2.
Three resistance of values 5 ohm and 30 ohm are connected to a battery of 12 V in parallel. What will be the total circuit resistance?
Ans.
3 ohm.
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Q 3.
An electric bulb is connected to a 220 V generator. The current is 0.50. What is the power of bulb?
Ans.
110 W.
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Q 4.
Name the wire that is usually employed for electricity transmission?
Ans.
Copper and Aluminum.
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Q 5.
How much energy is given to each coulomb of charge passing through a 6 V battery?
Ans.
6 J of energy.
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Q 6.
Define unit of current?
Ans.
Unit of current is Amphere.
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Q 7.
A stream of electros moving through a conductor constitutes?
Ans.
An electric current.
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Q 8.
Best conductor of electricity?
Ans.
Silver.
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Q 9.
The filament of electric bulb is made up of?
Ans.
Tungsten.
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Q 10.
1 volt is equal to?
Ans.
1 volt = 1 joule / 1 coulomb.
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Q 11.
Name the instrument that is used to measure electric current in a circuit?
Ans.
Ammeter.
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Q 12.
Melting point of tungsten?
Ans.
3380°C.
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Q 13.
If the resistance is doubled the current gets?
Ans.
Half.
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Q 14.
How much does the resistance of a wire change if the diameter of the wire is doubled?
Ans.
Become half.
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Q 15.
Name the arrangement used for domestic purposes?
Ans.
Parallel.
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Q 16.
SI unit if Resistance?
Ans.
Ohm.
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Q 17.
SI unit of power?
Ans.
Watt.
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Q 18.
Potential difference is measured in?
Ans.
Volt.
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Q 19.
SI unit of electric charge?
Ans.
Coulomb.
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Q 20.
Name the commercial unit of electrical energy?
Ans.
Kilowatt hour.
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