12th class Physics chapter 13 online mcq test with answers for ICS part 2 Physics Chapter 13 (Current Electricity)

Physics ICS Part 2 Chapter 13 Online MCQ's Test

Sr. #	Questions	Answers Choice
1	Drift velocity of electrons is.	10<sup>-1</sup> m/s 10<sup>-2</sup> m/s 10<sup>-3</sup> m/s 10<sup>3</sup> m/s
2	If 1 x 10⁷ electrons passes through a conductor in 1.0 micro second , then the current is.	2 A 1.6 A 2.6 x 10<sup>-6</sup> A 1.6 x 10<sup>-6</sup> A
3	A battery move a charge of 40 C around a circuit at constant rate in 20 Sec. The current will be.	2 A 0.5 A 80 A 800 A
4	The potential difference between the head and tail of an electrical to	600 Volt 700 Volt 800 Volt 900 Volt
5	Ampere second stands for the unit of.	Charge emf energy Power
6	A charged conductor has charge on its.	Inner surface Outer surface Middle surface Surrounding space
7	Thermosouple is an arrangement of two different metals:	Two convert heat energy into electrical energy To produce more heat To convert heat energy into chemical energy To convert electrical energy into heat energy
8	The powers of two electric bulbs are 100w and 200w. Which are connected to power supply of 220 V. The ratio of resistance of their filament will be:	1<span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 16px;">:2</span> 2<span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 16px;">:1</span> 1<span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 16px;">:3</span> 4<span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 16px;">:3</span>
9	The resistivity of two wires isρ₁ andρ₂ which are connected in series. If there dimentions are same then the equivalent resistivity of the combination will be:	(<span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 16px;">ρ<sub>1</sub> +</span><span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 16px;">ρ<sub>2</sub></span>) 1/<span style="font-family: arial, sans-serif; font-size: 16px; color: rgb(34, 34, 34);">ρ<sub>1</sub>+ 1/</span><span style="font-family: arial, sans-serif; font-size: 16px; color: rgb(34, 34, 34);">ρ<sub>2</sub></span> <span style="font-family: arial, sans-serif; font-size: 16px; color: rgb(34, 34, 34);">ρ<sub style="">1</sub>+</span><span style="font-family: arial, sans-serif; font-size: 16px; color: rgb(34, 34, 34);">ρ<sub style="">2</sub></span>/2 <span style="font-family: arial, sans-serif; font-size: 16px; color: rgb(34, 34, 34);">ρ<sub>1/</sub></span><span style="font-family: arial, sans-serif; font-size: 16px; color: rgb(34, 34, 34);">ρ<sub>2</sub></span>
10	A wire uniform cross-section. A length L and resistance R is cut into two equal parts. The resistivity of each part will be:	Doubled Halved Remain the same One fourth
11	When a wire is stretched and its radius becomes r/2, then its resistance will be	16 R 4 R 2R 0
12	106 electrons are moving through a wire per second the current developed is:	1.6 x 10-19 A 1 A 1.6 x 10-13A 106 A
13	Calculate current in 2 2R /4Ω resistor.	1 A 2R /4Ω R/3Ω 2R /3Ω
14	Three resistors of resistance R each are combined in various ways, Which of the following cannot be obtained?	3 RΩ 2R /4Ω R/3Ω 2R /3Ω
15	Seven resistances are connected as shown in the figures . THe equivalent resistance between A and B is:	3Ω 4Ω 4.5Ω 5Ω
16	The unit of resistance is:	Ω Ωm Ω<sup>-1</sup>m<sup>-1</sup> Ωm<sup>-1</sup>
17	Semiconductor diodes are called:	Ohmic non ohmic Both a & b none of above

Download This Set