Current Electricity 5 Question 7

7. Which of the following statements is false?

(2017 Main)

(a) In a balanced Wheatstone bridge, if the cell and the galvanometer are exchanged, the null point is disturbed

(b) A rheostat can be used as a potential divider

(c) Kirchhoff’s second law represents energy conservation

(d) Wheatstone bridge is the most sensitive when all the four resistances are of the same order of magnitude

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Solution:

  1. In a balanced Wheatstone bridge, there is no effect on position of null point, if we exchange the battery and galvanometer. So, option (a) is incorrect.


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