ONLINE MCQ EE-RESISTANCE AND OHM`S LAW 5

 Q41. The resistance of a conductor varies inversely as A. length B. area of cross-section C. temperature D. resistivity
 Q42. A light bulb draws 300 mA when the voltage across it is 240 V. The resistance of the light bulb is A. 400 ω B. 600 ω C. 800 ω D. 1000 ω
 Q43. A 3 ω resistor having 2 A current will dissipate the power of A. 2 watts B. 4 watts C. 6 watts D. 8 watts
 Q44. Two copper conductors have equal length. The cross-sectional area of one conductor is four times that of the other. If the conductor having smaller cross-sectional area has a resistance of 40 ohms the resistance of other conductor will be A. 160 ohms B. 80 ohms C. 20 ohms D. 10 ohms
 Q45. A thermistor has A. positive temperature coefficient B. negative temperature coefficient C. zero temperature coefficient D. variable temperature coefficient
 Q46. Conductance is reciprocal of A. resistance B. inductance C. reluctance D. capacitance
 Q47. The resistance of a parallel circuit consisting of two branches is 12 ohms. 1f the resistance of one branch is 18 ohms, what is the resistance of the other? A. 18 ω B. 36 ω C. 48 ω D. 64 ω
 Q48. The resistance of a few metres of wire conductor in closed electrical circuit is (a) practically zero (b) low A. practically zero B. low C. high D. very high
 Q49. Temperature co-efficient of resistance is expressed in terms of A. obms/°C B. mhos/ohm°C C. ohms/ohm°C D. mhos/°C
 Q50. Which of the following statements is correct regarding resistance? A. The resistance of a conductor is the hindrance by which the conductor opposes the flow of current through it. B. The resistance of wire is independent of the temperature for most of the materials C. The resistance of a wire does not depend upon its material. D. None of the above.