Month: December 2022

Three point charge -q, +q and -q are placed along a straight line at equl distances( say r meter) Electric potential energy of this system of charges will be if +q charge is in the middle- Solution:

There are 27 cells with an internal resistance 0.4 ohms and an external resistance 1.2 ohms. What is the most effective way of grouping them? (a)All the cells are in series (b) All the cells are in parallel (C) 9 parallel branches with 3 cells in each branch (d) 3 parallel branches with 9 cells …

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