Q.

Three L-C circuits have capacitances in the ratio 1:2:4. All the three capacitors are charged to the same potential and then made to oscillate. If the maximum current in the three circuits are in the ratio of 1:2:6 respectively, then what is the ratio of  the inductances of the three circuits ?

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a

4: 2 : 1

b

6 : 2 : 1

c

18 : 9 : 2

d

18 : 9 : 1

answer is C.

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Detailed Solution

imax=V0CLL=V02Cimax2 L1:L2:L3=11:24:436 =18:9:2

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