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A galvanometer of resistance 10k Omega c...

A galvanometer of resistance `10k Omega` can measure a maximum current `1mA` .A non-ideal battery of emf `6V` is connected across this galvanometer. A resistance `1Omega` is also connected across the galvanometer. If the galvanometer reads a current `0.2mA` ,the internal resistance of the battery is:

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