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MDCAT XI Physics Current ELectricity Online Test-2

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MDCAT XI Physics Current Electricity Online Test-2

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📚 Test Details

  • Subject: Physics
  • Class: 1st year / XI
  • Chapter:Current Electricity
  • Test: 2
  • Book: Sindh Textbook
  • Total No. Of MCQs: 50 MCQs
  • Time Allowed: 50 Minutes
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  • Price: Free

1 / 50

1. If the current through a resistor connected to voltage v  is doubled,resistance

2 / 50

2. If a metallic wire of resistance R  is stretched such that its length become double ,what will its resistance after stretching

3 / 50

3. A wire of resistance R is cut into 4equal parts,then these parts are joined in parallel ,what is equivalent resistance of this combination

4 / 50

4. In following I-V graph,which line shoes maximum resistance

5 / 50

5. Resistivity depends on

6 / 50

6. A girl has a wire of resistance R,if she cuts wire in 3 equal parts and then join then to form a triangle,what is equivalent resistance of this combination

7 / 50

7. There are n number of resistors,each of resistance R ,connected in different combinations,what is ratio of maximum resistance to minimum resistance obtained from these resistors

8 / 50

8. Find equivalent resistance between A and B points

 

9 / 50

9. 2 wires ,each of resistance 10ohm ,connected in parallel ,supplied by 20V source for 3 sec,how much energy is dissipated by circuit

10 / 50

10. If a wire of length l is stretched such that its area become double,if its volume remain same,what will happen to resistance

11 / 50

11. Which material  has the large conductivity

12 / 50

12. A wire of   length l resistance of 5ohm is further drawn such that its length become 3l,what will happen to resistance

13 / 50

13. FIND equivalent resistance between A and B points

14 / 50

14. Ohm’s law is valid at

15 / 50

15. A wire which has resistance R ,When bend to form a circle,what is equalvalent resistance between A and B points as shown in fIgure

 

 

16 / 50

16. There are three equal resistors ,when connected  in series,give equivalent resistsnce 9ohm , Suppose one of these is removed and connected in parallel with same series of others two ,what is  equivalent resistance of this combination

17 / 50

17. Choose correct statements regarding series combination:

  1. total current is equal to sum of individual current of each resistor
  2. total voltage  is equal to sum of individual voltage of each resistor
  3. Equivalent  resistance is greater than  individual resistance of each resistor
  4. Power loss decrease with increase in number of resistors

18 / 50

18. If area and cross sectional both are halved,what will happen to resistance

19 / 50

19. When a resistor in connected to 10V battery and 2A  current passes through it,what is power dissipation of resistor

20 / 50

20. If each half of circle shown in diagram has resistance of 20 ohm,what isequivalent resistance between A and B

 

21 / 50

21. Conditions of validity of ohm’s law is/are

1.resistance should be inversly propotional to current

2.resistance should be directly  propotional to voltage

3.current  should be directly  propotional to voltage

22 / 50

22. What is power dissipation of a  25 Ω  resistor when  when connected to 30v battery

23 / 50

23. what is formula of conductivity

24 / 50

24. a wire which has resistance R, it it is cut into two equal part ,and then these two parts  connected in Series ,what will be equivalent resistance.

25 / 50

25. if a boy has 3 resistors of resistance R1=2Ω , R2=2Ω and R3=4Ω,if he wants to get equivalent resistance of 2Ω,he should connect

26 / 50

26. When a wire of resistance 5ohm is  supplied by 1000V battery,how much current passes through it

27 / 50

27. In parallel combination,total voltage is

28 / 50

28. Maximum power transfer occur when

29 / 50

29. 4 resistors of resistance 2 Ω 3 Ω 4 Ω and 6 Ω are connected in series,if voltage across 2 Ω  resistor is  is 2v,calculate total power through circuit

30 / 50

30. Power of resistors increase with increases in no. of resistors  if resistors are

31 / 50

31. If ten resistors ,each of resistance n,are connected in parallel,then equivalent resistance will be

32 / 50

32. When a 10A current passes through  a resistance of 20ohm,how much voltage is supplied by source to resistor

33 / 50

33. Find equivalent resistsance is each resistor has resistance R=1ohm

34 / 50

34. If wire of length L and diameter d and cross sectional are A,if it is cut into four  equal parts,then two of them are connected in series,what will happen to resistivity of wire

35 / 50

35. If four resistors ,each of resistance 4 Ω are connected in parallel,if current passing through  one resistor is 2A, Calculate total power  dissipation through circuit is

36 / 50

36. What is the SI  unit of conductivity

37 / 50

37. We have four resistors of 1ohm,3ohm,7ohm,and 10ohm  resistance, respectively are connected in parallel ,  when connected to a source of 10V ,when current through 1ohm resistors is 10A  ,what  voltage is across 7ohm resistor

38 / 50

38. With increase of temperature,conductivity  of

39 / 50

39. What is power dissipation of a  25 Ω  resistor when 2A current passes through it

40 / 50

40. What is resistance of bulb filament operating at 900v source and 0.5A current passes through it

41 / 50

41. If  area  of a conductor  is increased,then resistivity will

42 / 50

42. There are 10 resistors ,first five   of them  each have 2ohm resistance ,are connected in series  other five ,each having 5ohm resistance are connected parallel, when these two combination are connected in series,what is equivalent resistance of this combination

43 / 50

43. Cells connected in parallel

44 / 50

44. Three resistor R1=2ohm   R2 =3ohm R3=6ohm ,are connected in parallel,  when 2A current passes through 6ohm resistors,how much current passes through R2

45 / 50

45. As the temperature of mercury decreased,its conductivity is

46 / 50

46. A Wire is joined to form a  closed square loop,if each part of square has resistance R/4,  then what is equivalent resistance between two opposite corners of square loop

47 / 50

47. When 10A  current for 2secs  passes through a circuit which has resistance of 5ohm, how much power is supplied by source

48 / 50

48. A uniform straight wire has resistance 36 ohm, if it is bend to form a circle ,then what is resistance R1  between C and D portion of circle made by angle of 30 degree as shown in fugure

 

 

49 / 50

49. 4 resistors,each of 4ohm resistance are initially connected is series,then connected in parallel,what is ratio of equivalent resistance of series combination to equivalent resistance of parallel combination

50 / 50

50. What  happens to mercury when mercury reaches at 4.15k temperature

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