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Primary and Secondary Batteries An electric battery consists of a number of electrochemical cells, connected either in series or parallel. A cell, which is the basic unit of a battery, …
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Magnetic Circuit It may be defined as the route or path which is followed by magnetic flux. The law of magnetic circuit are quite similar to (but not the same …
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Force Between Two Parallel Conductors Case (i) Currents in the same direction. In the figure given below are shown two parallel conductors P and Q carrying currents I1 and I2 …
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Absolute Permeability and Relative Permeability In Figure given below it is shown a bar of a magnetic material, say, iron placed in a uniform field of strength H N/Wb. Suppose, …
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Transient Relations During Capacitor Charging Cycle Whenever a circuit goes from one steady-state condition to another steady-state condition, it passes through a transient state which is of short duration. The …
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Discharging of a Capacitor As shown in Figure given below, when S is shifted to b, C is discharged through R. It will be seen that the discharging current flows …
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Time Constant in RL RC Circuit Just at the start of charging, potential difference across capacitor is zero, hence from (ii) putting vc = 0, we get ∴ initial rate …
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Charging of a Capacitor In the figure given below is shown an arrangement by which a capacitor C may be charged through a high resistance R from a battery of …
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Force of Attraction Between Oppositely-charged Plates In the figure given below, shown two parallel conducting plates A and B carrying constant charges of + Q and − Q coulombs respectively. …
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Energy Stored in a Capacitor Charging of a capacitor always involves some expenditure of energy by the charging agency. This energy is stored up in the electrostatic field set up …
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