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A parallel plate air capacitor of capacitance C is connected to a cell of emf V and then disconnected from it. A dielectric slab of dielectric constant K, which can just fill the air gap of the capacitor, is now inserted in it. Which of the following is incorrect?
Options
(a) The potential difference between the plates decreases K times
(b) The energy stored in the capacitor decreases K times
(c) The change in energy stored is (CV²/2) * (1/K -1)
(d) The charge on the capacitor is not conserved
Correct Answer:
The charge on the capacitor is not conserved
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
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Topics: Electrostatics
(146)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- When an object is placed 40cm from a diverging lens, its virtual image is formed 20 cm
- The voltage of an a.c.supply varies with time (t) as V=120 sin 100 πt the maximum voltage
- A round uniform body of radius R, mass M and moment of inertia I rolls down
- The potential of a large liquid drop when eight liquid drops are combined is 20 V.
- The thermo e.m.f. E in volts of a certain thermocouple is found to vary
Topics: Electrostatics (146)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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