Advanced Study Material for Class 12 Physics: Chapter 07 Alternating Current
Explore structured advanced study materials through the CBSE Class 12 Physics Alternating Current Objective Questions. Tailored for Class 12 learners, utilizing these Physics resources ensures thorough preparation and strengthens foundational knowledge before final CBSE evaluations.
Practice Class 12 Physics Resources: Chapter 07 Alternating Current
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CBSE Class 12 Physics Alternating Current Objective Questions. Please refer to the examination notes which you can use for preparing and revising for exams. These notes will help you to revise the concepts quickly and get good marks.
1. A 10μ F capacitor is connected across a 200 V, 50 Hz a.c. supply. The peak current through the circuit is
(a) 0.6 amp (b) 0.6 √2 amp (c) (0.6 / √2) amp (d) (0.6 π/2) amp.
2. In a L R circuit the a.c. source has voltage 220 V and the potential difference across the inductance is 176 volts. The potential difference across the resistance will be
(a) 44 V (b) 396 V (c) 132 V (d) √[(250×176)] V
3. An a.c. voltage source E = 200 √2 sin 100 t is connected across a circuit containing an a.c. ammeter and capacitor of capacity 1μF. the reading of ammeter is
(a) 10 mA (b) 20 mA (c) 40 mA (d) 80 mA
4. A 12 Ω resistor and a 0.21 henry inductor are connected in series to an a.c. source operating at 20 volt,50 cycle. The phase angle between the current and source voltage is
(a) 3 tan–1 (b)tan–1 1/√3 (c) tan–1 (5.5) (d) tan–1 (1)
5. In order to obtain a time constant of 10 seconds in an R.C. circuit containing a resistance of 103 Ω, the capacity of the condenser should be
(a) 10 μF (b) 100 μF (c) 1000 μF (d) 10000 μF
6. An A.C. series circuit contains 40 Ω of resistance and 30 Ω of inductive reactance. Then the impedance of circuit is
(a) 70 Ω (b) 10 Ω (c) 50 Ω (d) 70 Ω
7. A group of electric lamps having a total power rating of 1000 watt is supplied by an a.c. voltage E = 200 sin (310 t + 600). Then the r.m.s. value of the circuit current is
(a) 10 amp (b) 10 √2 amp (c) 20 amp (d) 20 √2 amp.
8. In the alternating current circuit shown in following figure, the currents through the inductor and the capacitor are 1.2 amp and 1.0 amp. respectively. The current drawn from the generator is
(a) 0.4 amp. (b) 0.2 amp. (c) 1.0 amp. (d) 1.2 amp.
9. An alternating voltage E=200 √2 sin 100 t, where V is in volt and t in seconds, is connected to a series combination of 1 μF capacitor and a 10 kΩ resistor through an ac ammeter. The reading of the ammeter will be
(a) 2 mA (b) 10 2 mA (c) 2 mA (d) 20 mA
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Free CBSE Study Guides: Class 12 Physics Chapter 07 Alternating Current
Essential Notes for Class 12 Physics
Review targeted study resources for Chapter 07 Alternating Current tailored for Class 12 learners. Utilizing these structured notes and quick-revision tools ensures complete alignment with current CBSE evaluation standards.
Verified Solutions for Class 12 Physics
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FAQs
Our advanced study package for Chapter 07 Alternating Current includes detailed concepts, diagrams, Mind Maps, and explanation of complex topics to ensure Class 12 students learn as per syllabus for 2026 exams.
The Mind Maps provided for Chapter 07 Alternating Current act as visual anchors which will help faster recall during high-pressure exams.
Yes, teachers use our Class 12 Physics resources for lesson planning as they are in simple language and have lot of solved examples.
Yes, You can download the complete, mobile-friendly PDF of the Physics Chapter 07 Alternating Current advanced resources for free.
Yes, our subject matter experts have updated the Chapter 07 Alternating Current material to align with the rationalized NCERT textbooks and have removed deleted topics and added new competency-based questions.