Current Electricity Quiz | Current Electricity Online Test for Practice
Current Electricity MCQ Questions for Practice
31. The resistivity of alloy manganin is
Correct Answer is: Nearly independent of temperature
32. The smallest resistance that can be obtained by the combination of n resistors each resistance r is :
Correct Answer is: r/n
33. The specific resistance of a rod of copper as compared to that of thin wire of copper is :
Correct Answer is: same
34. Two conductors of equal length and radii the ratio of 2 : 3 are; connected in parallel the source of electricity. The ratio of the velocity of electrons in the conductor be :
Correct Answer is: 1 : 1
35. Two equal resistors are connected in series across a battery and consume a power of P. If these are connected in parallel, then the power consumed will be:
Correct Answer is: 4P
36. Two wires of the same material are given. The first wire is twice as long as the second and has twice the diameter of the second. The resistance of the first will be
Correct Answer is: Half of the second
37. When a metal conductor connected to left gap of a meter bridge is heated, the balancing point
Correct Answer is: shifts towards right
38. Which of the following has a negative temperature coefficient of resistance ?
