Current Electricity and Electrical InstrumentHard
Question
For a post office box, the graph of galvanometer deflection versus R (resistance pulled out of RB) for the ratio 100 : 1 is given as shown. A careless student pulls out two non consecutive values R marked in the graph. Find the value of unknown resistance
Options
A.3.2 ohm
B.3.24 ohm
C.3.206 ohm
D.None
Solution
Deflection is zero for 324 so value of unknown
resistance =
= 3.24 Ω
resistance =
= 3.24 ΩCreate a free account to view solution
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