NEET 2022 Phase 1 | Electromagnetic Induction and Alternating Current Question 19 | Physics

A series LCR circuit with inductance 10 H, capacitance 10 $$\mu$$F, resistance 50 $$\Omega$$ is connected to an ac source of voltage, V = 200sin(100t) volt. If the resonant frequency of the LCR circuit is v₀ and the frequency of the ac source is v, then

$${v_0} = v = 50$$ Hz

$${v_0} = v = {{50} \over \pi }$$ Hz

$${v_0} = {{50} \over \pi }$$ Hz, $$v = 50$$ Hz

$$v = 100$$ Hz, $${v_0} = {{100} \over \pi }$$ Hz

NEET 2021

MCQ (Single Correct Answer)

-1

An inductor of inductance L, a capacitor of capacitance C and a resistor of resistance 'R' are connected in series to an ac source of potential difference 'V' volts as shown in figure. Potential difference across L, C and R is 40V, 10V and 40V, respectively. The amplitude of current flowing through LCR series circuit is 10$$\sqrt 2 $$ A. The impedance of the circuit is :

NEET 2021 Physics - Electromagnetic Induction and Alternating Current Question 21 English

NEET 2021 Physics - Electromagnetic Induction and Alternating Current Question 21 English

5$$\Omega$$

4$$\sqrt 2 $$ $$\Omega$$

5/$$\sqrt 2 $$ $$\Omega$$

4$$\Omega$$

NEET 2021

MCQ (Single Correct Answer)

-1

A step down transformer connected to an ac mains supply of 220 V is made to operate at 11 V, 44W lamp. Ignoring power losses in the transformer, what is the current in the primary circuit ?

0.2A

0.4A

NEET 2021

MCQ (Single Correct Answer)

-1

A series LCR circuit containing 5.0 H inductor, 80$$\mu$$F capacitor and 40$$\Omega$$ resistor is connected to 230V variable frequency ac source. The angular frequencies of the source at which power transferred to the circuit is half the power at the resonant angular frequency are likely to be :

42 rad/s and 58 rad/s

25 rad/s and 75 rad/s

50 rad/s and 25 rad/s

46 rad/s and 54 rad/s

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