ECAT Pre Computer Science Chapter 12 online mcq test with answers for Physics chapter 12 (Electrostatics)

ECAT Physics Chapter 12 Electrostatics Online Test

Sr. #	Questions	Answers Choice
1	The substances whose resistance decreases with the increase in temperature these substances have coefficient of	positive temperature negative temperature absolute temperature zero temperature
2	The fractional change in resistance per kelvin is known as	temperature coefficient resistance coefficient super temperature critical temperature
3	If the length of the conductor is double and its cross sectional area is halved, its conductance will	Increase four fold Become one-fourth Become one-half Remains unchanged
4	The resistivity of a substance depends upon the	length mass area temperature
5	The SI unit of conductivity is	ohm-m ohm<sup>-1</sup>m<sup>-1</sup> ohm-m<sup>-1</sup> ohm<sup>-1</sup>m
6	The unit of conductance is	ohm meter mho ohm-meter
7	The unit of resistivity is	ohm ohm-m<sup>2</sup> ohm-meter ohm-m<sup>-1</sup>
8	Resistance of a conductor is increased, the currant will	Decrease Increase Remain the same None of these
9	The resistance of a conductor does not depend on its	mass resistivity length cross-sectional area
10	Three resistance 500,500 and 50 ohms are connected in series across 555 volts mains. The current flowing through them will be	0.52 A 1 mA 0.7 mA 1.4 A
11	Three resistors of resistance 2,3 and 6 ohms are connected in parallel, their equivalent resistance is	11.0 ohm 1.0 ohm 7.0 ohm 3.0 ohm
12	If the resistance of 2 ohm and 4 ohm are connected in parallel, the equivalent resistance will be	6 ohm 4 ohm zero ohm 1.33 ohm
13	Resistance of a conductor depends upon	the quantity of current passing through it the voltage applied between its end its dimensions, physical state and nature of its material all of the above
14	The potential difference across each resistance in series combination is	same different zero none of these
15	Magnetic effect at a point caused due to flow a current depend upon the	Quantity of current Distance from current Both the quantity of current and distance from current element None of the all

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