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CBSE - Class 12 > Physics > Alternating Current Worksheets

Free CBSE - Class 12 Physics - Alternating Current worksheets

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1.
A $100 \Omega$ resistor is connected to a $220 V$, $50 Hz$ ac supply.
(b) What is the net power consumed over a full cycle?
2.
(a) The peak voltage of an ac supply is $300 V$. What is the rms voltage?
3.
(b) The rms value of current in an ac circuit is $10 A$. What is the peak current?
4.
A $44 mH$ inductor is connected to $220 V$, $50 Hz$ ac supply. Determine the rms value of the current in the circuit.
5.
A $60 \mu F$ capacitor is connected to a $110 V$, $60 Hz$ ac supply. Determine the rms value of the current in the circuit.
6.

A 44 mH inductor is connected to 220 V, 50 Hz ac supply. A 60 mF capacitor is connected to a 110 V, 60 Hz ac supply. what is the net power absorbed by each circuit over a complete cycle. Explain your answer.

7.
A charged $30 \mu F$ capacitor is connected to a $27 mH$ inductor. What is the angular frequency of free oscillations of the circuit?
8.
A series LCR circuit with $R = 20 \Omega$, $L = 1.5 H$ and $C = 35 \mu F$ is connected to a variable-frequency $200 V$ ac supply. When the frequency of the supply equals the natural frequency of the circuit, what is the average power transferred to the circuit in one complete cycle?
9.

Figure 7.17 shows a series LCR circuit connected to a variable frequency $230 V$ source. $L = 5.0 H$, $C = 80\mu F$, $R = 40 \Omega$. (a) Determine the source frequency which drives the circuit in resonance.

10.

Figure 7.17 shows a series LCR circuit connected to a variable frequency $230 V$ source. $L = 5.0 H$, $C = 80\mu F$, $R = 40 \Omega$. (c) Determine the rms potential drops across the three elements of the circuit. Show that the potential drop across the LC combination is zero at the resonating frequency.

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Chapters in CBSE - Class 12 Physics

Electric Charges and Fields Worksheet Electrostatic Potential and Capacitance Worksheet Current Electricity Worksheet Moving Charges and Magnetism Worksheet Magnetism and Matter Worksheet Electromagnetic Induction Worksheet Electromagnetic Waves Worksheet Ray Optics and Optical Instruments Worksheet Wave Optics Worksheet Dual Nature of Radiation and Matter Worksheet Atoms Worksheet Nuclei Worksheet Semiconductor Electronics Worksheet Communication Systems Worksheet

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