Physics
An instrument used to measure the magnitude of current flowing in a circuit is :
- voltmeter
- galvanometer
- ammeter
- rheostat
Related Questions
A …………… is a device by which resistance in a circuit can be varied continuously.
- key
- switch
- rheostat
- voltmeter
Rheostat is used in a circuit to provide :
- fixed current
- fixed voltage
- fixed resistance
- variable resistance
A …………… is either used to detect the presence of a weak current or to only know the direction of flow of current in a circuit.
- ammeter
- galvanometer
- voltmeter
- rheostat
Insulators have ……………electrons and conductors have …………… electrons.
- no free, large number of free
- large number of free, no free
- no free, small number of free
- small number of free, no free