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State the law of combination of resistan...

State the law of combination of resistances in parallel.

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Combination of resistors in parallel:
`R_(eq)=(R_(1)xxR_(2))/(R_(1)+R_(2))`
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ZEN PUBLICATION-ELECTRICITY-ZEN ADDITIONAL QUESTIONS SECTION (VERY SHORT ANSWER TYPE QUESTIONS)
  1. A current of 5 amperes flows through a wire whose ends are at a potent...

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  2. Give the law of combination of resistances in series.

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  3. State the law of combination of resistances in parallel.

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  4. Two resistances x and y are connected i] in parallel and, ii] in s...

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  5. What is the SI unit of [i] electric energy, and [ii] electric power?

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  6. Explain why, filament type electric bulbs are not power efficient.

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  7. Resistance of an incandescent filament of a bulb is comparatively much...

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  8. What happens to the other bulbs in series circuit, if one bulb blows o...

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  9. Calculate the number of electrons constituting one coulomb of charge.

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  10. State the relationship between 1 ampere and 1 coulomb.

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  11. State the relationship between 1 volt and 1 joule.

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  12. Would electrons move from higher potentials to lower potentials or vic...

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  13. Why is a voltmeter connected in parallel across a circuit element?

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  14. What is the SI unit of potential difference ? Name the device used to ...

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  15. What is meant by saying that the electric potential at a point is Ivol...

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  16. How much work is done when one coulomb charge moves against a potentia...

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  17. What is the SI unit of electric current?

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  18. Compare how an ammeter and a voltmeter are connected in a circuit.

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  19. What is the current in a circuit if the charge passing through each po...

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  20. Name the unit of electrical resistance and give its symbol.

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