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State Ohm's law ? How can it be verified...

State Ohm's law ? How can it be verified experimentally ? Does it hold good under all conditions ? Comment.

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### Step-by-Step Solution **Step 1: State Ohm's Law** Ohm's Law states that at constant temperature, the current (I) flowing through a conductor between two points is directly proportional to the voltage (V) across the two points. This can be mathematically expressed as: \[ I \propto V \] When we remove the proportionality sign, we get: \[ I = R \cdot V \] where \( R \) is the resistance of the conductor, which is a constant for a given material at a constant temperature. ...
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NCERT EXEMPLAR ENGLISH-ELECTRICITY-Short Answer Type Questions
  1. A child has drawn the electric circuit to study Ohm's law as shown in ...

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  2. Three 2 Omega resistors, A, B and C are connected as shown in figure. ...

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  3. Should the resistance of an ammeter be low or high ? Give reason.

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  4. Draw a circuit diagram of an electric circuit containing a cell, a key...

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  5. How does use of a fuse-wire protect electrical appliances ?

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  6. What is electrical resistivity ? In a series electrical circuit compri...

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  7. What is the commercial unit of electrical energy ? Represent it in ter...

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  8. (a) A current of 1 A flows in a series curcuit containing an electric ...

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  9. Why is parallel arrangement used in domestic wiring ?

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  10. B1,B2 and B3 are three identical bulbs connected as shown in (fig. 3.4...

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  11. Three incandecent bulbs of 100 W each are connected in series in an el...

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  12. State Ohm's law ? How can it be verified experimentally ? Does it hold...

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  13. What is electrical resistivity ? How does it depend om temperature. Gi...

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  14. How will you infer with the help of an experiment that the same curren...

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  15. How will you conclude that the same potential difference (voltage) exi...

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  16. What is Joule's heating effect ? How can it be demonstrated experiment...

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  17. Find out the folowing in the electric circuit given in (Fig. 3.48). ...

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