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What will be the voltmeted ofresistance 250 ohm when it is connected across a cell of emf 2 V and inteonal resistance 12 ohm |
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Answer» Answer: Given: R = 100 Ω, r = 20 Ω, E = 2 V To FIND: READING of voltmeter (V) Formula: V = E - IR Calculation: CURRENT through the circuit is given by I=R+rE=100+202=1202 I=601A From formula, V=2−(601×20)=2−0.3333 ∴ V = 1.667 V The reading on the voltmeter is 1.667 V |
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