Electric Circuits and Currents
The resistor whose resistivity can be varied manually is known as
transistor
thermistor
variable resistor
fixed resistor
variable resistor
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To control electric current in a circuit, there is used aA. resistor
B. insulator
C. conductor
D. wire
Every time a fuse melts, you have to
A. change the wire
B. change the fuse
C. replace the plug
D. replace the circuit breaker
In most of the loudspeakers, electrical signals pass through a
A. magnet
B. wire coil
C. spring
D. resistor
Wires are heated when they carry
A. electrons
B. protons
C. ions
D. photons
Simple circuits have
A. single pin plug
B. double pin plug
C. triple pin plug
D. massive pin plug
For electrolysis to work, used compound should be a
A. insulator
B. conductor
C. metalloid
D. non conductor
Compared to devices having wires, torch bulb does not conduct
A. heat as well as wires
B. electricity as well as wires
C. both a and b
D. electricity as well as energy
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