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Question

R, L and C represent the physical quantities resistance, inductance and capacitance, respectively. Which one of the following combinations has the dimension of frequency?


A

1RC

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B

RL

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C

1LC

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D

CL

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Solution

The correct option is C

1LC


The explanation for the correct options:

In the case of options A, B, and C:

The time constant in RC circuits is

It has the unit of time,

τ=RC.

As a result, 1RC is a frequency unit.

Similarly, when it comes to LC oscillations,

τ=LC

For RLcircuit,

τ=LR

Hence options A, B, and C are correct.


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