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Capacitors Numericals Q1. Two metal plates having charges Q , -Q face each other at some separation and are dipped into an oil tank, if the oil is pumped out, the electric field between the plates will _____. Q2. Three capacitors of capacitance 6 μF each are available. The minimum and maximum capacitances, which may be obtained are respectively _____. Q3. The plates of a parallel plate capacitor are made of circular discs of radii 5 cm each. If the separation between the plates is 1 mm . What is the capacitance of the capacitor? Ans. 6.95 × 10-⁵ μF Q4. Three capacitors having capacitances 20 μF, 30 μF and 40 μF are connected in series with a 12V battery. Find the charge on each of the capacitors. How much work has been done by the battery in charging the capacitors? Ans. 110 μC on each approximately, 1.32 milli Joule Q5. The distance between the plates of a parallel plate capacitor is 4 cm . A field of 5,000 volt per metre is established between the plates and an uncharged metal pl

Q1. Two isolated spherical conductors having radii 5 cm and 10 cm. They have charges of 12nC and -3nC respectively. Find the charges after they are connected by a conducting wire. Also, find the common potential after redistribution. Ans. 3 nC,  6 nC,  540V Q2. Two parallel plate capacitors A and B having capacitance of 1μF and 5 μF are charged separately to the same potential of 100V. Now, the positive plate of A is connected to the negative plate of B, and the negative plate of A is connected to the positive plate of B. Find the final charges on each capacitor. Ans. (200/3 μC),  (1000/3) μC This is the video for the Lovely students CLICK HERE by    www.advguruji.blogspot.com