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The resistance of an ammeter is 13Ω and its scale is graduated for current upto 100 A. After an addition shunt is connected to this ammeter it becomes possible to measure current upto 750 Ampere by this meter. The value of shunt resistance is :
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Correct option is B
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The ammeter has range 1 ampere without shunt. The range can be varied by using different shunt resistances. The graph between shunt resistance and range will have the nature
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