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Grade: 12
        
a galvanometer has a resistance of 20 Ω and reads full scale when 0.2V is applied across it .to convert it into a 10 A ammeter ,the galvanometer coil should have a
1)0.05Ω resistor connected across it
2)100Ω resistor connected across it
3)0.02Ω resistor connected across it
 4)200Ω resistor connected in series with it
one year ago

Answers : (1)

Suraj Singh
148 Points
							The correct answer is 3rd one...  As to convert a galvanometer into an ammeter we provide a resistance in parallel with the galvanometer known as shunt...  Apply basic ohms law and get d ans
						
one year ago
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