L, C and R represent the physical quantities inductance, capacitance and resistance, respectively. Which of the following combinations have dimensions of frequency?
The formula used: For RC circuit the time constant is
Where t is the time constant
R is the resistance
C is the capacitance
Frequency
Then the frequency of the RC circuit is given by
For LR circuit the time constant is given by
Where is the time constant
L is the inductance
R is the resistance
Then the frequency is given by
Let’s take a multiplication of f1 and f2
This combination has a dimension of frequency.
The above combination has a dimension of frequency
i. RC has a frequency component
ii. LR has a frequency component
iii. f1f2 has a frequency component
Thus, option A, B and C are correct.