# If $$Z_1$$ and $$Z_2$$ are the impedances of the given circuits (a) and (b) as shown in figures, then choose the correct option:           1. $$Z_1<Z_2$$ 2. $$Z_1+Z_2=20~\Omega$$ 3. $$Z_1=Z_2$$ 4. $$Z_1>Z_2$$

Subtopic:  Different Types of AC Circuits |
61%
From NCERT
NEET - 2023
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The maximum power is dissipated for an AC in a/an:
 1 resistive circuit 2 $${LC}$$ circuit 3 inductive circuit 4 capacitive circuit
Subtopic:  Power factor |
71%
From NCERT
NEET - 2023
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For very high frequencies, the effective impedance of the circuit (shown in the figure) will be:

1. $$4~ \Omega$$
2. $$6~ \Omega$$
3. $$1~ \Omega$$
4. $$3~ \Omega$$
Subtopic:  Different Types of AC Circuits |
From NCERT
NEET - 2023
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An AC source is connected to the given circuit. The value of $$\phi$$ will be:

 1 $$60^\circ$$ 2 $$90^\circ$$ 3 $$30^\circ$$ 4 $$45^\circ$$
Subtopic:  Different Types of AC Circuits |
64%
From NCERT
NEET - 2023
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The net impedance of circuit (as shown in the figure) will be:

1. $$25~\Omega$$
2. $$10\sqrt{2}~\Omega$$
3. $$15~\Omega$$
4. $$5\sqrt{5}~\Omega$$

Subtopic:  Different Types of AC Circuits |
57%
From NCERT
NEET - 2023
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In a series $${LCR}$$ circuit, the inductance $${L}$$ is $$10~\text{mH}$$, capacitance $${C}$$ is $$1~\mu\text{F}$$ and resistance $${R}$$ is $$100~\Omega$$. The frequency at which resonance occurs is:
 1 $$1.59~\text{kHz}$$ 2 $$15.9~\text{rad/s}$$ 3 $$15.9~\text{kHz}$$ 4 $$1.59~\text{rad/s}$$
Subtopic:  Different Types of AC Circuits |
58%
From NCERT
NEET - 2023
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$$12~\text{V},60~\text{W}$$ lamp is connected to the secondary of a step down transformer, whose primary is connected to ac mains of $$220~\text{V}$$. Assuming the transformer to be ideal, what is the current in the primary winding?
1. $$0.37 ~\mathrm{A}$$
2. $$0.27 ~\mathrm{A}$$
3. $$2.7 ~\mathrm{A}$$
4. $$3.7 ~\mathrm{A}$$
Subtopic:  Transformer |
66%
From NCERT
NEET - 2023
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An ac source is connected to a capacitor $$C$$. Due to decrease in its operating frequency:
 1 capacitive reactance remains constant 2 capacitive reactance decreases. 3 displacement current increases. 4 displacement current decreases.
Subtopic:  Different Types of AC Circuits |
From NCERT
NEET - 2023
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A standard filament lamp consumes $$100$$ W when connected to $$200$$ V AC mains supply. The peak current through the bulb will be:
1. $$0.707$$ A
2. $$1$$ A
3. $$1.414$$ A
4. $$2$$ A
Subtopic:  RMS & Average Values |
69%
From NCERT
NEET - 2022
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
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To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

An inductor of inductance $$2~\text{mH}$$ is connected to a $$220~\text{V}$$, $$50~\text{Hz}$$ ac source. Let the inductive reactance in the circuit is $$X_1$$. If a $$220~\text{V}$$ DC source replaces the AC source in the circuit, then the inductive reactance in the circuit is $$X_2$$. $$X_1$$ and $$X_2$$, respectively, are:
1. $$6.28~\Omega$$, zero
2. $$6.28~\Omega$$, infinity
3. $$0.628~\Omega$$, zero
4. $$0.628~\Omega$$, infinity
Subtopic:  Different Types of AC Circuits |
65%
From NCERT
NEET - 2022
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh