A. detect current in a circuit
B. measure current flowing through a circuit
C. measure voltage across a circuit
D. measure potential difference between two points in a circuit
Related Mcqs:
- A sensitive galvanometer gives full-scale deflection with 100 mV. If the resistance of the galvanometer is 50? the maximum current that can flow through safely is__________________?
A. 2.0 mA
B. 20 mA
C. 200 mA
D. 0.2 mA - The deflection for 50 division of galvanometer is decreased to 25 divisions by shunt resistance of 12Ω. Galvanometer resistance is_____________?
A. 18Ω
B. 30Ω
C. 24Ω
D. 12Ω - When the coil of the galvanometer is in equilibrium then the deflecting couple is____________________?
A. zero
B. equal to the restoring couple
C. greater than the restoring couple
D. smaller than the restoring couple - Coil of a galvanometer is suspended in a radial magnetic field so that the deflecting torque on the coil is always___________________?
A. BINA cosa
B. BINA sina
C. BINA tana
D. BINA - A moving coil galvanometer of resistance 100? gives half scale deflection for a current of 20mA. What will be the potential difference across it ?
A. 4 volt
B. 5 volt
C. 2 volt
D. 0.4 volt - The sensitivity of a galvanometer is given by__________________?
A. C/BAN
B. CAN/B
C. BAN/C
D. ABC/N - The effective way to increase the sensitivity of a moving coil galvanometer is to___________________?
A. use a very long and fine suspension
B. use a coil of very large area
C. use a coil with very large number of turns
D. use a very strong magnetic field - Galvanometer is a very sensitive device with______________________?
A. very low damping
B. very high damping
C. no damping at all
D. radial field disintegration - n instrument which can measure potential without drawing any current is_____________________?
AA. voltmeter
B. galvanometer
C. cathode ray oscilloscope (CRO)
D. ammeter - Which one of the following is not an electromechanical instrument ?
A. galvanometer
B. voltmeter
C. ammeter
D. AC transformer and DC generator
