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NCERT EXEMPLAR-ELECTRICITY-Electricity
- An electric kettle consumes 1 kW of electric power when operated at 22...
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- Two resistors of resistances 2 Omega and 4 Omega when connected to a b...
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- Unit of electric power may also be expressed as :
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- A child has drawn the electric circuit to study Ohm's law as shown in ...
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- Three 2 Omega resistors, A, B and C are connected as shown in figure. ...
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- Should the resistance of an ammeter be low or high ? Give reason.
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- Draw a circuit diagram of an electric circuit containing a cell, a key...
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- How does use of a fuse-wire protect electrical appliances ?
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- What is electrical resistivity ? In a series electrical circuit compri...
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- What is the commercial unit of electrical energy ? Represent it in ter...
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- (a) A current of 1 A flows in a series curcuit containing an electric ...
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- Why is parallel arrangement used in domestic wiring ?
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- B1,B2 and B3 are three identical bulbs connected as shown in (fig. 3.4...
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- Three incandecent bulbs of 100 W each are connected in series in an el...
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- State Ohm's law ? How can it be verified experimentally ? Does it hold...
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- What is electrical resistivity ? How does it depend om temperature. Gi...
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- How will you infer with the help of an experiment that the same curren...
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- How will you conclude that the same potential difference (voltage) exi...
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- What is Joule's heating effect ? How can it be demonstrated experiment...
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- Find out the folowing in the electric circuit given in (Fig. 3.48). ...
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