Question

A GALVANOMETER WITH COIL RESISTANCE 12.0OHMS SHOWS FULL SCALE DEFLECTION FOR A CURRENT OF 2.5MA HOW WOULD YOU CONVERT IT INTO A VOLTMETER OF RANGE 0 TO 10VOLTS
Add a resistor in series with the
coil:

R+12 = E/I = 10/0.0025 = 4,000,
R = 4,000-12 = 3,988 Ohms.

R = (10-0.0025*12)/0.0025 = 9.97/0.0025 = 3,988 Ohms.

Related Questions

8. A galvanometer has a coil resistance of 100 ohms and gives a full scale deflection when the poten... The coil of wire in a galvanometer has a resistance of RC = 78.0 Ù. The galvanometer exhibits a full... When a moving coil galvanometer has a resistance of 20 ohms and gives full scale deflection of 1.5mA... A galvanometer of resistance 100  gives full scale deflection at 10 mA current. What should be the...