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JEE Main201911 Jan 2019Evening ShiftPhysicsCapacitanceActual

Seven capacitors, each of capacitance 2 F , are to be connected in a configuration to obtain an effective capacitance of ( 6 13 ) F . Which of the combinations, shown in figures below, will achieve the desired value?

Correct answer

1

Step-by-step solution

As required equivalent capacitance should be C_ eq = 6 13 F Therefore three capacitors must be in parallel and 4 must be in series with it. 1 C _ eq = [ 1 3 C ]+ [ 1 C + 1 C + 1 C + 1 C ]C_ eq = 3 C 13 = 6 13 F [ as C =2 F ] So, desired combination will be as below:

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