MCQ Questions for Class 12 Physics Chapter 3 Current Electricity Part-2 with Answers

MCQ Questions for Class 12 Physics Chapter 3 Current Electricity Part-2 with Answers 

MCQ Questions for Class12 Physics Chapter 3 Current Electricity Part-2

Current Electricity Part-2 Class 12 Physics MCQs Questions with Answers

Check the below NCERT MCQ Questions for Class 12 Physics Chapter 3 Current Electricity Part-2 with Answers Pdf free download. MCQ Questions for Class 12 Physics with Answers were prepared based on the latest exam pattern. We have Provided Current Electricity Part-2 Class 12 Physics MCQs Questions with Answers to help students understand the concept very well.

Class 12 Physics Chapter 3 Quiz

Class 12 Physics Chapter 3 MCQ Online Test


You can refer to NCERT Solutions for Class 12 Physics Chapter 3 Current Electricity Part-2 to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

Current Electricity Part-2 Class 12 Physics MCQ online test

Q1. A galvanometer acting as a volt meter will have with its coil.
A.a high resistance in parallel
B.a high resistance in series
C.a low resistance in parallel
D.a low resistance in series
Ans: a high resistance in series
Q2. When three identical bulbs of 60 W, 200 V rating are connected in series to a 200 V supply, the power drawn by them will be:
A.20 W
B.60 W
C.180 W
D.10 W
Ans: 20 W
Q3. n resistances, each of R Ω, are connected in parallel gives an equivalent resistance of R Ω. If these resistances were , connected in series, the combination would have a resistance in Ω is equal to
A.n²R
B.R/n²
C.R/n
D.nR
Ans: n²R
Q4. Why is the Wheatstone bridge more accurate than other methods of measuring resistances: ‘
A.It is a null method
B.It is based on Kirchhoffs laws
C.It has four resistances
D.It does not involve ohm’s law
Ans: It is a null method
Q5. A potential difference of 10 V is applied across a conductance of 2 S. The current in the conductor will be :
A.20 A
B.5 A
C.0.2 A
D.None of these
Ans: 20 A
Q6. Ohm’s law is valid when the temperature of conductor is :
A.very low
B.very high
C.varying
D.constant
Ans: constant
Q7. The emf of a car battery is about:
A.2.5 V
B.4.5 V
C.8.6 V
D.12 V
Ans: 12 V
Q8. Emf is measured in :
A.joule
B.joule/coulomb
C.joule-coulombs
D.joule/coulomb/metre
Ans: joule/coulomb
Q9. 1 kilowatt hour is commonly known as :
A.unit
B.1 faraday
C.1 curie
D.None of these
Ans: unit
Q10. How many joules are equal to I kWh ?
A.3.6 × 104
B.3.6 × 105
C.3.6 × 106
D.None of these
Ans: 3.6 × 106
Q11. The temperature coefficient of resistance is expressed in :
A.°C
B.°C-1
C.m°C-1
D.None of these
Ans: °C-1
Q12. Copper wire is used as connecting wire because :
A.copper has high electrical resistivity
B.copper has low electrical resistivity
C.copper has low electrical conductivity
D.copper has high value of elasticity
Ans: copper has low electrical resistivity
Q13. The heat sensitive device whose resistivity changes very rapidly with change of temperature is called a :
A.resistor
B.super-conductor
C.thermocouple
D.thermistor
Ans: thermistor
Q14. The phenomenon of super-conductivity was discovered by :
A.Ohm
B.Onnes
C.Edison
D.None of these
Ans: Onnes
Q15. The specific resistance of a conductor increases with :
A.increase in temperature
B.increase in cross-sectional area
C.decrease in length
D.decrease in cross-sectional area
Ans: increase in temperature
Q16. In an experiment with potentiometer, null point with a cell is found at 240 cm. When the cell is shunted with a resistance 2 Ω, the null point becomes 120 cm internal resistance of cell is :
A.4 Ω
B.2 Ω
C.1 Ω
D.\(\frac{1}{2}\) Ω
Ans: 2Ω
Q17. 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 :
A.2 : 3
B.4 : 9
C.1 : 1
D.3 : 2
Ans: 1 : 1
Q18. The charge flowing in a conductor varies with time as :
q = αt \(\frac{1}{2}\) βt² + \(\frac{1}{6}\) γt³
Where α, β, γ are positive constants. Then the initial current (l) is given by the condition :
A.l = α
B.l = α²
C.l = α-1
D.None of these
Ans: l = α
Q19. In questions 38, the maximum value of current (lmax) is given by the condition :
A.lmax = α – \(\frac{β^2}{2γ}\)
B.lmax = α – \(\frac{β^2}{2α}\)
C.lmax = α – \(\frac{γ^2}{2β}\)
D.None of these
Ans: lmax = α – \(\frac{β^2}{2γ}\)
Q20. In questions 38, the line (t) after which the value of current reaches a maximum values given by :
A.t = \(\frac{α}{β}\)
B.t = \(\frac{β}{α}\)
C.t = \(\frac{β}{γ}\)
D.t = \(\frac{γ}{β}\)
Ans: t = \(\frac{α}{β}\)

MCQ Questions for Class 12 Physics


    MCQ Questions for Class 12 Physics Chapter 1 Electric Charges and Fields Part-1
    MCQ Questions for Class 12 Physics Chapter 1 Electric Charges and Fields Part-2
    MCQ Questions for Class 12 Physics Chapter 2 Electrostatic Potential and Capacitance Part-1
    MCQ Questions for Class 12 Physics Chapter 2 Electrostatic Potential and Capacitance Part-2
    MCQ Questions for Class 12 Physics Chapter 3 Current Electricity Part-1
    MCQ Questions for Class 12 Physics Chapter 3 Current Electricity Part-2
    MCQ Questions for Class 12 Physics Chapter 3 Current Electricity Part-3
    MCQ Questions for Class 12 Physics Chapter 4 Moving Charges and Magnetism Part-1
    MCQ Questions for Class 12 Physics Chapter 4 Moving Charges and Magnetism Part-2
    MCQ Questions for Class 12 Physics Chapter 5 Magnetism and Matter Part-1
    MCQ Questions for Class 12 Physics Chapter 5 Magnetism and Matter Part-2
    MCQ Questions for Class 12 Physics Chapter 6 Electromagnetic Induction Part-1
    MCQ Questions for Class 12 Physics Chapter 6 Electromagnetic Induction Part-2
    MCQ Questions for Class 12 Physics Chapter 7 Alternating Current Part-1
    MCQ Questions for Class 12 Physics Chapter 7 Alternating Current Part-2
    MCQ Questions for Class 12 Physics Chapter 8 Electromagnetic Waves Part-1
    MCQ Questions for Class 12 Physics Chapter 8 Electromagnetic Waves Part-2
    MCQ Questions for Class 12 Physics Chapter 9 Ray Optics and Optical Instruments Part-1
    MCQ Questions for Class 12 Physics Chapter 9 Ray Optics and Optical Instruments Part-2
    MCQ Questions for Class 12 Physics Chapter 10 Wave Optics Part-1
    MCQ Questions for Class 12 Physics Chapter 10 Wave Optics Part-2
    MCQ Questions for Class 12 Physics Chapter 11 Dual Nature of Radiation and Matter Part-1
    MCQ Questions for Class 12 Physics Chapter 11 Dual Nature of Radiation and Matter Part-2
    MCQ Questions for Class 12 Physics Chapter 12 Atoms
    MCQ Questions for Class 12 Physics Chapter 13 Nuclei Part-1
    MCQ Questions for Class 12 Physics Chapter 13 Nuclei Part-2
    MCQ Questions for Class 12 Physics Chapter 14 Semiconductor Electronics: Materials, Devices and Simple Circuits Part-1
    MCQ Questions for Class 12 Physics Chapter 14 Semiconductor Electronics: Materials, Devices and Simple Circuits Part-2
    MCQ Questions for Class 12 Physics Chapter 15 Communication Systems Part-1
    MCQ Questions for Class 12 Physics Chapter 15 Communication Systems Part-2

NCERT SOLUTIONS FOR CLASS 12

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