NEET | 2013Current Electricity and Electrical InstrumentMedium
Question
The resistances of the four arms P,Q, R and S ina Wheatstone′s bridge are 10 ohm, 30 ohm, 30 ohmand 90 ohm, respectively. The e.m.f. and internalresistance of the cell are 7 volt and 5 ohmrespectively. If the galvanometer resistance is50 ohm, the current drawn from the cell will be :-
Options
A.2.0 A
B.1.0 A
C.0.2 A
D.0.1 A
Solution
Total resistance of Wheatstone bridge
Current through cell
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