CBSE Class 12 Physics Current Electricity Worksheet Set D

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Read and download free pdf of CBSE Class 12 Physics Current Electricity Worksheet Set D. Download printable Physics Class 12 Worksheets in pdf format, CBSE Class 12 Physics Chapter 3 Current Electricity Worksheet has been prepared as per the latest syllabus and exam pattern issued by CBSE, NCERT and KVS. Also download free pdf Physics Class 12 Assignments and practice them daily to get better marks in tests and exams for Class 12. Free chapter wise worksheets with answers have been designed by Class 12 teachers as per latest examination pattern

Chapter 3 Current Electricity Physics Worksheet for Class 12

Class 12 Physics students should refer to the following printable worksheet in Pdf in Class 12. This test paper with questions and solutions for Class 12 Physics will be very useful for tests and exams and help you to score better marks

Class 12 Physics Chapter 3 Current Electricity Worksheet Pdf

Current Electricity MCQ Questions with Answers Class 12 Physics Chapter 3

Question- In a large building, there are 15 bulbs of 40 W, 5 bulbs of 100 W, 5 fans of 80 W and 1 heater of 1 kW. The voltage of the electric mains is 220 V. The minimum capacity of the main fuse of the building will be :
(a) 10 A
(b) 12 A
(c) 14 A
(d) 8 A
Ans-(b)
 
Question- This question has Statement-I and Statement-II. Of the four choices given after the statements, choose the one that best describes the two Statements.
Statement-I : Higher the range, greater is the resistance of ammeter.
Statement-II : To increase the range of ammeter, additional shunt needs to be used across it. 
(a) If Statement-I is true, Statement-II is true; Statement-II is the correct explanation for Statement-I.
(b) If Statement-I is true, Statement-II is true; Statement-II is not a correct explanation for Statement-I.
(c) If Statement-I is true; Statement-II is false.
(d) If Statement-I if false; Statement-Ii is true.
Ans-(d)
 
Question-  The supply voltage in a room is 120 V. The resistance of the lead wires is 6Ω. A 60W bulb is already switched on.What is the decrease of voltage across the bulb, when a 240 W heater is switched on in parallel to the bulb ? 
(a) zero
(b) 2.9 V
(c) 13.3 V
(d) 10.04 V
Ans-(d)
 
Question-  Two electric bulbs marked 25 W–220 V and 100 W-220 V are connected in series to a 440 V supply. Which of the bulbs will fuse ? 
(a) Both
(b) 100 W
(c) 25 W
(d) Neither
Ans-(c)
 
Question-  Resistance of a given wire is obtained by measuring the current flowing in it and the voltage difference applied across it. If the percentage errors in the measurement of the current and the voltage difference are 3% each, then error in the value of resistance of the wire is
(a) 6%
(b) zero
(c) 1%
(d) 3%
Ans-(a)
 
Question- The resistance of a wire is 5 Ω at 50°C and 6  Ω at 100°C.The resistance of the wire at 0°C will be 
(a) 2 Ω
(b) 1 Ω
(c) 4 Ω
(d) 3 Ω
Ans-(c)
 
Question- A material B has twice the specific resistance of A. A circular wire made of B has twice the diameter of a wire made of A. Then for the two wires to have the same resistance, the ratio B/A of their respective lengths must be 
(a) 1
(b) 1/2
(c) 1/4
(d) 2
Ans-(d)
 
Question-  An electric bulb is rated 220 V-100 W. The power consumed by it when operated on 110 V will be
(a) 75 W
(b) 40 W
(c) 25 W
(d) 50 W
Ans-(c)
 
Question- The resistance of a bulb filament is 100 Ω at a temperature of 100°C. If its temperature coefficient of resistance be 0.005 per °C, its resistance will become 200 Ω at a temperature of
(a) 300°C
(b) 400°C
(c) 500°C
(d) 200°C
Ans-(a)
 
Question-  A heater coil is cut into two equal parts and only one part is now used in the heater. The heat generated will now be
(a) doubled
(b) four times
(c) one-fourth
(d) halved
Ans-(a)
 
Question-  An energy source will supply a constant current into the load, if its internal resistance is 
(a) equal to the resistance of the load
(b) very large as compared to the load resistance
(c) zero
(d) non-zero but less than the resistance of the load
Ans-(c)
 
Question-  In a potentiometer experiment the balancing with a cell is at length 240 cm. On shunting the cell with a resistance of 2 Ω, the balancing length becomes 120 cm. The internal resistance of the cell is
(a) 1 Ω
(b) 0.5 Ω
(c) 4 Ω
(d) 2 Ω
Ans-(d)
 
Question- The resistance of hot tungsten filament is about 10 times the cold resistance. What will be the resistance of 100 W and 200 V lamp, when not in use ? 
(a) 40 Ω
(b) 20 Ω
(c) 400 Ω
(d) 200 Ω
Ans-(a)
 
Question-  The resistance of the series combination of two resistances is S. When they are joined in parallel, the total resistance is P. If S = nP, then the minimum possible value of n is
(a) 4
(b) 3
(c) 2
(d) 1
Ans-(a)
 
Question-  In a meter bridge experiment, null point is obtained at 20 cm from one end of the wire when resistance X is balanced against another resistance Y. If X < Y, then where will be the new position of the null point from the same end, if one decides to balance a resistance of 4X against Y ?
(a) 50 cm
(b) 80 cm
(c) 40 cm
(d) 70 cm
Ans-(a)
 
Question-  Time taken by a 836 W heater to heat one litre of water from 10°C to 40°C is 
(a) 50 s
(b) 100 s
(c) 150 s
(d) 200 s
Ans-(c)
 
Question-  The length of a given cylindrical wire is increased by 100%.Due to the consequent decrease in diameter the change in the resistance of the wire will be (AIEEE 2003)
(a) 200%
(b) 100%
(c) 50%
(d) 300%
Ans-(d)
 
Question-  A 220 V, 1000 W bulb is connected across a 110 V mains supply. The power consumed will be
(a) 750 W
(b) 500 W
(c) 250 W
(d) 1000 W
Ans-(c)
 
Question- A wire when connected to 220 V mains supply has power dissipation P1. Now the wire is cut into two equal pieces which are connected in parallel to the same supply. Power dissipation in this case is P2. Then P2 : P1 is
(a) 1
(b) 4
(c) 2
(d) 3
Ans-(b)
 
Question-  Current of 4.8 amperes is flowing through a conductor.The number of electrons crossing a cross-section per second will be
(a) 3 × 1019
(b) 7.68 × 1021
(c) 7.68 × 1020
(d) 3 × 1020
Ans-(a)
 
Question-  An ionization chamber with parallel conducting plates as anode and cathode has 5 × 107 electrons and the same number of singly-charged positive ions per cm3. The electrons are moving at 0.4 m/s. The current density from anode to cathode is 4 μA/m2. The velocity of positive ions moving towards cathode is
(a) 0.4 m/s
(b) 16 m/s
(c) Zero
(d) 0.1 m/s
Ans-(d)
 
Question- The resistance of a galvanometer is 10 ohm. It gives full scale deflection when 1 mA current is passed. The resistance to be connected in series for converting it into a voltmeter of 2.5 volt will be
(a) 249 Ω
(b) 2490 Ω
(c) 299 Ω
(d) 2999 Ω
Ans-(b)
 
Question-  A galvanometer has a resistance of 30 ohm and a current of 2 mA is needed to give full scale deflection. What is the resistance needed to convert it into a voltmeter of 0.2 volt range.
(a) 20 Ω
(b) 30 Ω
(c) 60 Ω
(d) 70 Ω
Ans-(d)


CBSE Class 12 Physics Current Electricity Worksheet Set D 1
CBSE Class 12 Physics Current Electricity Worksheet Set D 2
CBSE Class 12 Physics Current Electricity Worksheet Set D 3


Please click on below link to download CBSE Class 12 Physics Current Electricity Worksheet Set D

Chapter 01 Electric Charges And Fields
CBSE Class 12 Physics Electric Charges and Fields Worksheet Set A
CBSE Class 12 Physics Electric Charges and Fields Worksheet Set B
CBSE Class 12 Physics Electric Charges And Fields Worksheet Set C
CBSE Class 12 Physics Electric Charges And Fields Worksheet Set D
CBSE Class 12 Physics Electric Charges And Fields Worksheet Set E
Chapter 02 Electrostatic Potential and Capacitance
CBSE Class 12 Physics Electrostatic Potential and Capacitance Worksheet Set A
CBSE Class 12 Physics Electrostatic Potential and Capacitance Worksheet Set B
CBSE Class 12 Physics Electrostatic Potential And Capacitance Worksheet Set C
CBSE Class 12 Physics Electrostatic Potential And Capacitance Worksheet Set D
CBSE Class 12 Physics Electrostatic Potential And Capacitance Worksheet Set E
Chapter 03 Current Electricity
CBSE Class 12 Physics Current Electricity Worksheet Set A
CBSE Class 12 Physics Current Electricity Worksheet Set B
CBSE Class 12 Physics Current Electricity Worksheet Set C
CBSE Class 12 Physics Current Electricity Worksheet Set D
Chapter 04 Moving Charges and Magnetism
CBSE Class 12 Physics Magnetic Effects of Electric Current And Magnetism Worksheet
CBSE Class 12 Physics Magnetism and Matter Worksheet Set A
CBSE Class 12 Physics Moving Charges And Magnetic Force Worksheet
CBSE Class 12 Physics Moving Charges and Magnetism Worksheet Set A
CBSE Class 12 Physics Moving Charges and Magnetism Worksheet Set B
CBSE Class 12 Physics Moving Charges And Magnetism Worksheet Set C
Chapter 06 Electromagnetic Induction
CBSE Class 12 Physics Electromagnetic Induction And Alternating Current Worksheet Set A
CBSE Class 12 Physics Electromagnetic Induction And Alternating Current Worksheet Set B
CBSE Class 12 Physics Electromagnetic Induction Worksheet Set A
CBSE Class 12 Physics Electromagnetic Induction Worksheet Set B
Chapter 07 Alternating Current
CBSE Class 12 Physics Alternating Current Worksheet Set A
CBSE Class 12 Physics Alternating Current Worksheet Set B
Chapter 08 Electromagnetic Waves
CBSE Class 12 Physics Electromagnetic Waves Worksheet
Chapter 09 Ray Optics and Optical Instruments
CBSE Class 12 Physics Ray Optics and Optical Instruments Worksheet Set A
CBSE Class 12 Physics Ray Optics and Optical Instruments Worksheet Set B
CBSE Class 12 Physics Ray Optics And Optical Instruments Worksheet Set C
CBSE Class 12 Physics Ray Optics And Wave Optics Worksheet
CBSE Class 12 Physics Semiconductor Electronics Worksheet Set A
Chapter 10 Wave Optics
CBSE Class 12 Physics Wave Optics Worksheet
CBSE Class 12 Physics Wave Optics Worksheet Set A
Chapter 11 Dual Nature of Radiation and Matter
CBSE Class 12 Physics Dual Nature of Radiation and Matter Worksheet
CBSE Class 12 Physics Dual Nature of Radiation and Matter Worksheet Set A
CBSE Class 12 Physics Dual Nature of Radiation Worksheet Set A
CBSE Class 12 Physics Rapid Revision Question Bank Set B
Chapter 12 Atoms
CBSE Class 12 Physics Atoms And Nuclei Worksheet
CBSE Class 12 Physics Atoms Worksheet Set A
Chapter 13 Nuclei
CBSE Class 12 Physics Nuclei Worksheet
Chapter 14 Semiconductor Electronics Materials Devices and Simple Circuits
CBSE Class 12 Physics Semiconductor Devices And Communication System Worksheet
CBSE Class 12 Physics Semiconductor Materials Device And Simple Worksheet
z More Worksheets for Class 12 Physics
CBSE Class 12 Physics Graphical Question Bank
CBSE Class 12 Physics Gravitation Worksheet Set A
CBSE Class 12 Physics Gravitation Worksheet Set B
CBSE Class 12 Physics Important Formule Worksheet
CBSE Class 12 Physics Rapid Revision Question Bank
CBSE Class 12 Physics Worksheet Set A Solved
CBSE Class 12 Physics Worksheet Set B Solved
CBSE Class 12 Physics Worksheet Set C Solved
CBSE Class 12 Physics Worksheet Set D
CBSE Class 12 Physics Worksheet Set E
CBSE Class 12 Physics Worksheet Set F

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CBSE Class 12 Physics Chapter 3 Current Electricity Worksheet

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Chapter 3 Current Electricity CBSE Class 12 Physics Worksheet

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