A galvanometer has resistance of 10 ohms and a full scale deflection is produced by 5 milli amperes. What is the value of resistance that should be connected in series with it in order to enable it to read 2V?
A. 20 Ω
B. 10 Ω
C. 40 Ω
D. 30 Ω
Answer:D
A galvanometer has resistance of 10 ohms and a full scale deflection is produced by 5 milli amperes. What is the value of resistance that should be connected in series with it in order to enable it to read 2V?
A. 20 Ω B. 10 Ω C. 40 Ω D. 30 Ω