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In the circuit shown the cells and have negligible resistance. For and , the galvanometer shows no deflection. The value of is
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Question 1
(a) Six lead-acid type of secondary cells each of emf 2.0 V and internal resistance are joined in series to provide a supply to a resistance of . What are the current drawn from the supply and its terminal voltage?(b) A secondary cell after long use has an emf of 1.9 V and a large internal resistance of . What maximum current can be drawn from the cell? Could the cell drive the starting motor of a car?
Question 2
Three resistance each of and an unknown resistance from the four amrs of a Wheatstone's bridge circuit. When a resistance of is connected in parallel to the bridge gets balanced. What is the value of ?Stuck on the question or explanation?
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Question Text | In the circuit shown the cells and have negligible resistance. For and , the galvanometer shows no deflection. The value of is |
Answer Type | Text solution:1 |
Upvotes | 150 |