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

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

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

Current Electricity Part-3 Class 12 Physics MCQs Questions with Answers

Check the below NCERT MCQ Questions for Class 12 Physics Chapter 3 Current Electricity Part-3 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-3 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-3 to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

Current Electricity Part-3 Class 12 Physics MCQ online test

Q1. In following figure shows currents in a part of electrical circuit, then the value of/(in ampere) is given by :
MCQ Questions for Class 12 Physics Chapter 3 Current Electricity with Answers
A.0.3 A
B.0.5 A
C.1.3 A
D.None of these
Ans: 0.3 A
Q2. The smallest resistance that can be obtained by the combination of n resistors each resistance r is :
A.\(\frac{r}{n}\)
B.nr
C.\(\frac{n}{r}\)
D.n²r
Ans: \(\frac{r}{n}\)
Q3. Which of the following has a negative temperature coefficient of resistance ?
A.Tungsten
B.Carbon
C.Nichrome
D.Platinum
Ans: Carbon
Q4. An electric heating element consumes 500 W, when connected to a 100 V line. If the line voltage becomes 150 V, the power consumed Will be:
A.500 W
B.750 W
C.1000 W
D.1125 W
Ans: 750 W
Q5. A uniform w ire connected across a supply produces heat H per second. If wire is cut into three equal parts and all the parts are connected in parallel across the same supply, the heat produced per second will be :
A.\(\frac{H}{9}\)
B.9 H
C.3 H
D.\(\frac{H}{3}\)
Ans: \(\frac{H}{3}\)
Q6. In India electricity is supplied fordomestic use at 220 V. It is supplied at 110 V in U.S.A. If the resistance of a 60 W bulb use in India is R. the resistance of a 60 W bulb for use in USA will be:
A.2 R
B.R
C.R/2
D.R/4
Ans: R/4
Q7. In the following figure represents a balanced Wheatstone bridge circuit. What is the value of X ?
MCQ Questions for Class 12 Physics Chapter 3 Current Electricity with Answers
A.15 Ω
B.20 Ω
C.25 Ω
D.30 Ω
Ans: 25 Ω
Q8. Two bulbs 25 W, 220 V and 100 W, 220 V are given. Which has higher resistance?
A.25 W
B.100 W
C.both bulbs have equal resistance
D.resistance of bulbs can not be compared
Ans: 25 W
Q9. Potentiometer measures the potential difference more accurately than a voltmeter because:
A.It has a wire of high resistance
B.It has a wire of low resistance
C.It does not draw current from external circuit
D.It draws heavy current from external circuit
Ans: It does not draw current from external circuit
Q10. In a Wheatstone bridge, the resistance each arm is 10 Ω. If the resistance galvanometers is also 10 Ω, then effective resistance of the bridge will be :
A.40 Ω
B.20 Ω
C.10 Ω
D.5 Ω
Ans: 10 Ω
Q11. The resistance of an aluminium wire is/i. It is stretched to /i times its original length. Its new resistance will be :
A.nr
B.n²r
C.\(\frac{n^2}{r}\)
D.\(\frac{r}{n^2}\)
Ans: n²r
Q12. A wire P is half the diameter and half the length of a wire Q of similar material. The ratio of resistances of P to that 0 is:
A.4 : 1
B.8 : 1
C.2 : 1
D.1 : 2
Ans: 2 : 1
Q13. What is the resistance across A and B in the network in Fig.?
A.R
B.2 R
C.\(\frac{R}{2}\)
D.6 R
Ans: R
Q14. When the wires are connected in parallel, the heat produced in the thinner wire is H1 and that in the thicker wire is H2 Then:
A.H1 = H2
B.H1 < H2
C.H1 > H2
D.H1 ≥ H2
Ans: H1 < H2
Q15. Two equal resistors are connected in series across a battery and consume a power of P. If these are connected in parallel, then the’ power consumed will be:
A.2P
B.4P
C.\(\frac{p}{4}\)
D.P
Ans: 4P
Q16. Thermo electricity was discovered by:
A.Joule
B.Peitier
C.Thomson
D.Seebeck
Ans: Seebeck
Q17. Thermo emf is the order of:
A.10 V
B.10-3 V
C.10-6 V
D.10-12 V
Ans: 10-6 V

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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