12th Class PHYSICS MCQ CHAPTER NO.2 CURRENT ELECTRICITY Test No.2

Physics MCQs 2nd Year Chapter No. 2 CURRENT ELECTRICITY Test No. 2, FSc, Grade 12, Second Year Multiple Choice Questions, Medical College ( MDCAT ) , ECAT & University Admission Entry Test Exams Online Preparation, Chapter Wise Questions Answers Quiz Notes in Pdf Download, All Old Board Papers included, All Queries reply within 24 Hours. Click here to Contact us for any Query/Question regarding Exams.

PHYSICS – Class 12
Chapter Name : CURRENT ELECTRICITY
Chapter No. 2 [Test No. 2]
Multiple Choice Questions from Text Book
Note : All MCQ’s selected in this test are from OLD board Papers and Text Book.




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Book Name :  Physics – II
Chapter No.  2
Chapter Name : Quadratic Equations
Total MCQ from Text Book :  72
Book Version  :
2022

Published By : Punjab Text Book Board Lahore
Approved By : Govt of the Punjab and Federal Ministry for Education
Test Type : MCQ’s
Exam conduct By : Matric Boards of Sindh, KPK, Balochistan, AJK, Gilgit Baltistan, Punjab & Federal
Class / Grade  : 12 ( F.Sc. )
Total Marks : 72
Total Time :   72 minutes 




124

GRADE 12 - PHYSICS CHAPTER NO.2 CURRENT ELECTRICITY Test No. 2

GRADE 12 - PHYSICS CHAPTER NO.2 CURRENT ELECTRICITY Test No. 2

1 / 72

Heat generated by a 40 watts bulb in one hour is:

2 / 72

The electrical energy is converted to heat at the rate of:

3 / 72

Of the two bulbs in a house, one glow brighter than the other. Which of the following has larger resistance

4 / 72

Ampere hour is unit of

5 / 72

You are given three bulbs of 25W, 40W and 60W. Which of them has lowest resistance?

6 / 72

A current flowing away from a point is taken as:

7 / 72

The unit of electrical energy is:

8 / 72

The length of a potentiometer wire is 100 em and the emf of the standard cell is E volts. It is used to measure the emf of a battery of internal resistance 0.5. If the balancing point is obtained at 30 cm from positive end, then emf of the battery is (I - current in the potentiometer wire)

9 / 72

Primary cell are connected in parallel to

10 / 72

Slide wire bridge is a practical form of:

11 / 72

Which of the following bulbs has the least resistance:

12 / 72

A 100W and 25W bulb are connected in series with a 220 V supply. Which of the following is the net power consumed?

13 / 72

In potentiometer, the ratio of emf is equal to ratio of balancing:

14 / 72

The SI unit of electromotive force (emf) is:

15 / 72

A carbon resistance reads red-red-black. What is its resistance?

16 / 72

E is emf of a battery. What will be the potential drop across terminals an external resistance R = r (internal resistance) is connected across it

17 / 72

If resistivity of a potentiometer wire be ρ and area of cross-section be A. If I is current through the potentiometer wire then what will be potential gradient along the wire?

18 / 72

The amount of heat produced in a resistor when a current is passed through it can be found using

19 / 72

Which once is used to determine the internal resistance of a cell?

20 / 72

In which form energy is stored in a battery?

21 / 72

Mass of substance librated during electrolysis in a given time depends upon

22 / 72

The resistance of a 60 watt bulb in a 120 volt line is: 3

23 / 72

An instrument which can measure potential without drawing any current is called:

24 / 72

The resistance of discharge tube is

25 / 72

Internal resistance is the resistance offered by:

26 / 72

Kirchhoff s second rule is according to law of conservation of:

27 / 72

A current flowing towards a point is taken as:

28 / 72

A complex system consisting of a number of resistors and voltage sources and can be solved by:

29 / 72

The maximum power (Pout) is delivered to a load resistance R, when the internal resistance of the source is:

30 / 72

Which of the following is commercial unit of electricity?

31 / 72

The maximum output power delivered to a load resistance is given by:

32 / 72

A wire of resistance R is stretched four times its length uniformly. Its new resistance will be:

33 / 72

The resistance of a conductor is 5ω at 50C0 and 6ω at 100C0. Which of the following is its resistance at 0C0

34 / 72

Kirchhoff s current rule obeys the conservation of

35 / 72

The emf of a cell is E, it is supplying current in an external circuit of resistance R. If terminal applying potential difference is V, then the internal resistance "r" of the cell is:

36 / 72

Kirchhoff s first rule is the manifestation of the law of conservation of:

37 / 72

Three resistance of 3ω are connected in such a way that net resistance is 2ω then

38 / 72

A car battery has emf 12V and. internal resistance 5 < 10-2ω. If it draw 60 A current, the terminal voltage of battery will Be:

39 / 72

An electric fan draws a current of 5 ampere at 220 volts, its power is:

40 / 72

The algebraic sum of potential changes for a complete circuit is zero, is a statement of:

41 / 72

Wheatstone bridge is used to:

42 / 72

The terminal potential difference of a battery is equal to its emf when circuit is:

43 / 72

When the Wheatstone Bridge is balanced then:

44 / 72

The drift velocity of the free electron in a conducting wire carrying a current "I" is "v". If in a wire of the same metal, but the double the radius, the current b "2i", then the drift velocity of electrons will be:

45 / 72

A main line has a power of 11kw. Which of the following is the maximum number of 100 watt bulbs connected for full glow?

46 / 72

The resistivity of a wire depends on its

47 / 72

Which of the following is the appropriate material to be used in the construction of resistance box

48 / 72

A piece of copper and a piece of germanium are cooled from the room temperature down 80K,

49 / 72

An electric bulb of 100 watt is connected to supply of 220V. Which of the following is the resistance of filament?

50 / 72

The resistance of a wire is R. It is cut into four equal parts and bundled together in parallel. The equivalent resistance will be:

51 / 72

The condition for the Wheatstone bridge to be balanced is given by:

52 / 72

A copper wire is connected across a battery. The drift velocity of electron is V. If another wire of same length and double the radius is connected across the same battery, The drift velocity will be

53 / 72

The emf is the "cause" and potential difference is its:

54 / 72

A cell of emf E volt, internal resistance r ohm is being changed, Then the terminal potential difference is;

55 / 72

A heater coil is cut into two equal parts and only one part is now used is heater. The heat generated now will be:

56 / 72

For an open circuit:

57 / 72

Potentiometer is used to:

58 / 72

Sensitivity of a potentiometer can be increased by

59 / 72

The reciprocal of resistance is called

60 / 72

How many electrons constitute current of one ampere?

61 / 72

If an electric current is passed through the nerve, the man

62 / 72

A uniform resistance wire of length L and diameter D has a resistance R. Another wire of same material has length 4L and diameter 2D, its resistance will be

63 / 72

Two wires of same metal have the same length but their area are in the ratio 3:1. The two wires are connected in series. The resistance of thicker wire is 10ω. What is total resistance of combination?

64 / 72

The resistance of a wire is 1ω. Which of the following is new resistance if length of wire is doubled?

65 / 72

Sum of all the currents meeting at a point in the circuit is zero (i.e. ∑I = 0), is the statement of:

66 / 72

Terminal potential difference of a battery is greater than its emf when: ,

67 / 72

Terminal potential difference of a battery is equal to its emf when its internal resistance is:

68 / 72

Electromotive force is closely related to:

69 / 72

The energy supplied to unit charge by the cell is called:

70 / 72

For an open circuit, the current flowing through the circuit will be:

71 / 72

Kirchhoff s first rule is also known as: .

72 / 72

The maximum output power gives the value

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