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The figure shows a circuit with three ideal batteries. Find the magnitude and direction of currents in the branches AG, BF and CD.
Determine the current in branches AB, AC and BC of the network shown in figure.
Find the current in branch BM in the network shown:
The following figure shows a circuit diagram. We can find the currents through and potential differences across different resistors using Kirchhoff's rules.
Derive the relation between the current and the drift velocity of free electrons in a conductor. Briefly explain the variation of resistance of a conductor with rise in temperature.
An ammeter, together with an unknown resistance in series is connected across two identical batteries, each of emf 1·5 V, connected (i) in series, and (ii) in parallel. If the current recorded in the two cases be (1/2) A and (1/3) A respectively, calculate the internal resistance of each battery.
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