Physics-
General
Easy
Question
The capacitor shown in figure 1 is charged by connecting switch S to contact a. If switch S is thrown to contact b at time t = 0, which of the curves in figure 2 represents the magnitude of the current through the resistor R as a function of time?
- A
- B
- C
- D
The correct answer is: D
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A metal ball of radius R is surrounded by a homogeneous medium of dielectric constant K and resistivity r. The ball is given a charge Q at t = 0, which starts leaking through the medium towards infinity. After how much time will the charge on the ball become Q/2?
A metal ball of radius R is surrounded by a homogeneous medium of dielectric constant K and resistivity r. The ball is given a charge Q at t = 0, which starts leaking through the medium towards infinity. After how much time will the charge on the ball become Q/2?
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Statements III: Work done by external agent to move block slowly from position B to O is negative
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physics-General
