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Why is it necessary to obtain the balanc...

Why is it necessary to obtain the balance point in the middle of bridge wire ? Explain.

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CBSE COMPLEMENTARY MATERIAL-ELECTROSTATICS AND CURRENT ELECTRICITY -SHORT ANSWER QUESTIONS (2 MARKS)
  1. A battery has an emf of 12V and an internal resistance of 2 Omega. C...

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  2. In a potentiometer arrangment, a cell of emf 1.25 V gives a balance po...

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  3. In a meter bridge, the balance point is found to be 39.5 cm from end A...

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  4. A meterbridge is in balance condition. Now if galvanometer and cell ar...

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  5. If the emf of the driving cell be decreased, what will be effect on th...

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  6. Why should the area of cross-section of the meter-bridge wire be unifo...

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  7. Given any two limitations of Ohm’s law.

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  8. Which one of the two, an ammeter or a milliammeter, has a higher resis...

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  9. Name two factors on which the resistivity of a given material depends ...

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  10. If the electron drift speed is so small (~ 10 ^(-3) m//s) and the e...

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  11. A battery of emf 2.0 volts and internal resistance 0.1 Omega is bein...

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  12. Why should the jockey be not rubbed against potentiometer wire ?

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  13. What is meant by the sensitivity of a potentiometer of any given lengt...

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  14. Five identical cells, each of emf E and internal resistance r, are con...

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  15. An electron in a hydrogen atom is considered to be revolving around a ...

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  16. In the given circuit, with steady current, calculate the potential dro...

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  17. .A cell of emf E and internal resistance r is connected across a varia...

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  18. Winding of rheostat wire are quite close to each other why do not they...

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  19. Why is it necessary to obtain the balance point in the middle of bridg...

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  20. What are the possible cause of one side deflection in Galvanometer whi...

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