Physics
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
Related Questions
Rheostat is used in a circuit to provide :
- fixed current
- fixed voltage
- fixed resistance
- variable resistance
An instrument used to measure the magnitude of current flowing in a circuit is :
- voltmeter
- galvanometer
- ammeter
- rheostat
The presence of …………… in the path makes a circuit incomplete and current does not flow.
- conductor
- ammeter
- voltmeter
- insulator
Connecting wires are made of substances that have :
- highly conducting material
- negligible resistance
- free electrons in a large number
- all of these