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19. A cell with negligible internal resistance is connected as shown. The [TZ2 PHYSICS SL 2018 MAY.]
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A cell with negligible internal resistance is connected as shown. The ammeter and the voltmeter are both ideal. What changes occur in the ammeter reading and in the voltmeter reading when the resistance of the variable resistor is increased[TZ2 PHYSICS SL 2018 MAY.]
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