Question

The time constant of C-R circuit is

• A. 1/CR
• B. C/R
• C. CR
• D. R/C

Answer 1

Answer: (C)

CR

Answer 2

The time constant for resonance circuit,
$\tau=CR$
Growth of charge in a circuit containing
capacitance and resistance is given by the formula.
$q=q_0(1-e^{-\tau/CR})$
CR is known as time constant in this formula.