Questions
In the arrangement shown, initially switch S is open and reading of the ammeter is 2.5 A. What will be the reading of the ammeter after the switch S is closed?
detailed solution
Correct option is A
Initially i1=12R=5R AmpAfter S is closed, i2=10R=105i1=2i1=2×2.5 Amp ⇒i2=5 Amp.Talk to our academic expert!
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An ammeter of range 5 A is to be converted into an ammeter of range 10 V. If the resistance of ammeter be 0.1 , then what resistance should be connected in series with it
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