A. 3
B. 4
C. 6
D. 7
0
With three resistances connected in parallel, if each dissipates 20 W the total power supplied by the voltage source equals_____________?
0
A thermistor has_____________?
A. 10 W
B. 20 W
C. 40 W
D. 60 W
1
If/, R and t are the current, resistance and time respectively, then according to Joule’s law heat produced will be proportional to_______________?
A. positive temperature coefficient
B. negative temperature coefficient
C. zero temperature coefficient
D. variable temperature coefficient
0
Nichrome wire is an alloy of_____________?
A. I2Rt
B. I2Rf
C. I2R2t
D. I2R2t*
0
When a voltage of one volt is applied, a circuit allows one micro ampere current to flow through it. The conductance of the circuit is___________?
A. lead and zinc
B. chromium and vanadium
C. nickel and chromium
D. copper and silver
1
Which of the following can have negative temperature coefficient _____________?
A. 1 n-mho
B. 106 mho
C. 1 milli-mho
D. none of the above
0
Conductance : mho :: ____________?
A. Compounds of silver
B. Liquid metals
C. Metallic alloys
D. Electrolytes
0
1 angstrom is equal to______________?
A. resistance : ohm
B. capacitance : henry
C. inductance : farad
D. lumen : steradian
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