question_answer

Five capacitors each of 10\[\mu F\]capacity are connected to a potential of 100 V as shown in figure. The equivalent capacitance beween ihe points A and B is:

A)  5\[\mu F\]                                        

B)  10\[\mu F\]

C)  15\[\mu F\]                                      

D)  20 \[\mu F\]

Correct Answer: B

Solution :

                 Since, the ratio of capacitances in opposite arms of bridge is same, hence it is a balanced Wheatstone bridge. Therefore, capacitance of arm CD becomes ineffective. The circuit now reduces, to consisting of two sets of series capacitors. Hence, resultant capacitance is 10 \[\mu F\].