331. With three resistances connected in parallel, if each dissipates 20 W the total power supplied by the voltage source equals_____________?
A. 10 W
B. 20 W
C. 40 W
D. 60 W

332. A thermistor has_____________?
A. positive temperature coefficient
B. negative temperature coefficient
C. zero temperature coefficient
D. variable temperature coefficient

333. If/, R and t are the current, resistance and time respectively, then according to Joule’s law heat produced will be proportional to_______________?
A. I2Rt
B. I2Rf
C. I2R2t
D. I2R2t*

334. Nichrome wire is an alloy of_____________?
A. lead and zinc
B. chromium and vanadium
C. nickel and chromium
D. copper and silver

335. 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. 1 n-mho
B. 106 mho
C. 1 milli-mho
D. none of the above

336. Which of the following can have negative temperature coefficient _____________?
A. Compounds of silver
B. Liquid metals
C. Metallic alloys
D. Electrolytes

337. Conductance : mho :: ____________?
A. resistance : ohm
B. capacitance : henry
C. inductance : farad
D. lumen : steradian

338. 1 angstrom is equal to______________?
A. 10-8 mm
B. 10″6 cm
C. 10″10 m
D. 10~14 m

339. One newton meter is same as_____________?
A. one watt
B. one joule
C. five joules
D. one joule second

340. Which of the following does not change in a transformer ?
A. Current
B. Voltage
C. Frequency
D. All of the above

NOTE
IF YOU THINK ANY OF THE MCQ ABOVE IS WRONG.
PLEASE COMMENT WITH CORRECT ANSWER AND ITS DETAIL EXPLANATION IN COMMENT BOX.
THANK YOU