Questions
The emf and internal resistance of the battery shown in figure are 4.3 V and respectively. The external resistance R is . The resistance of the voltmeter and ammeter are and respectively. Find the readings of the two meters.
detailed solution
Correct option is B
First of all the draw the equivalent circuit diagram, current flowing through circuit =4.350||200+2+1=0.1AVoltmeter reading = 4.3 – 0.1 x 3 = 4 VTalk to our academic expert!
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A moving coil galvanometer converted into an ammeter reads up to 0.03 A by connecting a shunt of resistance 4r across it and ammeter reads up to 0.06 A, when a shunt of resistance r is used. What is the maximum current which can be sent through this galvanometer if no shunt is used?
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