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A freshly prepared cell has ………………… int...

A freshly prepared cell has ………………… internal resistance.

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A potentiometer circuit has been set up for finding the internal resistance of a given cell.The main battery, used across the potentiometer wire, has an emf of 2.0 V and a negligible internal resistance.The potentiomter were itself is 4m long.When the resistance, R, connected across the given cell, has values of (i) Infinity (ii)9.5 Omega the'balancing lengths', on the potentiometerwire are found to be 3m and 2.85m, respectively. The value of internal resistance of cell is

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A 10 Omega resistance is connected in series with a cell of emf 10V. A voltmeter is connected in parallel to a cell, and it reads 9.9 V. Find internal resistance of the cell.

What do you mean by internal resistance of a cell ?

A cell of emf 2.2V sends a current of 0.2A through a resistance of 10 Omega . The internal resistance of the cell is ______

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FULL MARKS-CURRENT ELECTRICITY-Additional Questions Solved (Fill in the blanks)
  1. With increase of temperature, resistance of conductors ……………………….. .

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  2. In insulators and semiconductors, as temperature increases, resistance...

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  3. A material with a negative temperature coefficient is called a …………………...

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  4. the temperature co-efficient of resistance for alloys is

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  5. The electric current in an external circuit flows from the ………………….. .

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  6. In the electrolytic cell, current flows from …………………. .

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  7. A freshly prepared cell has ………………… internal resistance.

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  8. State the sign convention for applying Kirchhoff's first rule.

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  9. The current law states that the algebraic sum of the currents meeting ...

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  10. Current law is a consequence of conservation of …………………….. .

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  11. Sate Kirchhoff's voltage rule.

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  12. Kirchhoff's second law is a consequence of conservation of …………….. .

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  13. Wheatstone bridge is used for ………………… .

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  14. ………………… is a form of Wheatstone's bridge.

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  15. The temperature coefficient of manganin wire is ……………….. .

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  16. Name the instrument which is used to measure potential difference.

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  17. The SI unit of electrical energy is .

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  18. An instrument to measure electrical power consumed is …………….. .

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  19. ………………… first introduced the electrochemical battery

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  20. Charging is a process of reproducing ………………….. .

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