An LCR circuit as shown in the figure is connected to a voltage source Vac whose frequency can be varied. The frequency, at which the voltage across the resistor is maximum, is:

Question

An LCR circuit as shown in the figure is connected to a voltage source Vac whose frequency can be varied. The frequency, at which the voltage across the resistor is maximum, is: (A) 902 Hz (B) 143 Hz (C) 23 Hz (D) 345 Hz

Tardigrade Admin · Accepted Answer

Frequency f=(1/2π√LC) =(1/2×3.4√24×2×10-6) ≃ 23Hz

Q. An $L CR$ circuit as shown in the figure is connected to a voltage source $V_{a c}$ whose frequency can be varied.
The frequency, at which the voltage across the resistor is maximum, is:

$902 Hz$

$143 Hz$

$23 Hz$

$345 Hz$

Frequency $f = \frac{1}{2 π L C}$
$= \frac{1}{2 \times 3.4 24 \times 2 \times 1 0 ^{- 6}}$
$≃ 23 Hz$

Q. An LCR circuit as shown in the figure is connected to a voltage source Vac​ whose frequency can be varied. The frequency, at which the voltage across the resistor is maximum, is:

902Hz

143Hz

23Hz

345Hz