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Electricity Questions

Practice 36 Electricity questions with detailed answers and explanations. Free MCQs, PYQs, and mock test questions for NEET, JEE, GATE, SSC and more.

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36
Total Questions
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10
Easy
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23
Medium
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3
Hard
Practice by Exam:Physics(35)Science(1)

About electricity — practice questions, PYQs & concepts

electricity is a frequently-tested topic on Physics, Science. ExamTest.live currently lists 36 electricity questions spanning previous-year papers from 2026 to 2026, each with worked solutions and a step-by-step explanation. Use the filters on this page to focus on a specific exam, difficulty level or year — every answer key is free, no sign-up required.

electricity weight in competitive exams

Across our electricity question bank, the largest sources are Physics (35) and Science (1). Click any exam chip above to drill down to that exam-specific question set.

How to use this page

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All Electricity Questions(1–36 of 36)

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Q1mediummcqPhysicsGeneral Knowledge Studies2026
An instrument called ______ measures the electric potential difference in a circuit.
Q2hardmcqPhysicsAIEEE2026
A moving coil galvanometer has equal divisions. Its current sensitivity is divisions per milliampere and voltage sensitivity is divisions per millivolt. In order that each division reads , the resistance in ohms needed to be connected in series with the coil will be:
Q3hardmcqPhysicsAIEEE2026
Two voltameters one of copper and another of silver, are joined in parallel. When a total charge flows through the voltameters, equal amount of metals are deposited. If the electrochemical equivalents of copper and silver are and respectively the charge which flows through the silver voltameter is:
Q4mediummcqPhysicsAIEEE2026
In the circuit, the galvanometer shows zero deflection. If the batteries and have negligible internal resistance, the value of the resistor will be:
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Q5mediummcqPhysicsAIEEE2026
Two sources of equal emf are connected to an external resistance . The internal resistance of the two sources are and (). If the potential difference across the source having internal resistance is zero, then:
Q6mediummcqPhysicsAIEEE2026
A fully charged capacitor has a capacitance ‘ ’. It is discharged through a small coil of resistance wire embedded in a thermally insulated block of specific heat capacity ‘ ’ and mass ‘ ’. If the temperature of the block is raised by ‘ ’, the potential difference across the capacitance is:
Q7easymcqPhysicsAIEEE2026
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:
Q8easymcqPhysicsAIEEE2026
A parallel plate capacitor is made by stacking equally spaced plates connected alternatively. If the capacitance between any two adjacent plates is then the resultant capacitance is:
Q9easymcqPhysicsAIEEE2026
An energy source will supply a constant current into the load if its internal resistance is:
Q10easymcqPhysicsAIEEE2026
A circuit has a resistance of and an impedance of . The power factor of the circuit will be:
Q11easymcqPhysicsAIEEE2026
The phase difference between the alternating current and emf is . Which of the following cannot be the constituent of the circuit?
Q12mediummcqPhysicsAIEEE2026
In a potentiometer experiment the balancing with a cell is at length . On shunting the cell with a resistance of the balancing length becomes . The internal resistance of the cell is:
Q13mediummcqPhysicsAIEEE2026
The resistance of hot tungsten filament is about times the cold resistance. What will be the resistance of and lamp when not in use?
Q14mediummcqSciencePrepp2026
Which of the following is used for determining the value of 1 ampere?
Q15mediummcqPhysicsPhysics
0% accuracy
Two batteries, one of emf 18 V and internal resistance 2 Ω, and the other of emf 12 V and internal resistance 1 Ω, are connected as shown. The voltmeter V will record a reading of :

image
Q16mediummcqPhysicsPhysics
0% accuracy
A network of four capacitors of capacity equal to C1 = C, C2 = 2C, C3 = 3C and C4 = 4C are connected to a battery as shown in the figure. The ratio of the charges on C2 and C4 is :

image
Q17mediummcqPhysicsPhysics
0% accuracy
For the network shown in the figure, the value of the current i is :

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Q18mediummcqPhysicsPhysics
0% accuracy
In a circuit, L, C and R are connected in series with an alternating voltage source of frequency f. The current leads the voltage by 45°. The value of C is :
Q19mediummcqPhysicsPhysics
0% accuracy
A 5-A fuse wire can withstand a maximum power of 1 W in circuit. The resistance of the fuse wire is :
Q20mediummcqPhysicsPhysics
0% accuracy
When a wire of uniform cross-section a, length l and resistance R is bent into a complete circle, resistance between two of diametrically opposite points will be :
Q21easymcqPhysicsPhysics
A galvanometer has a coil of resistance and gives a full scale deflection for current. If it is to work as a voltmeter of range, the resistance required to be added will be:
Q22mediummcqPhysicsPhysics
In the given circuit the reading of voltmeter and are each. The reading of the voltmeter and ammeter are respectively:
image
Q23mediummcqPhysicsPhysics
In producing chlorine by electrolysis power at is being consumed. How much chlorine per minute is liberated (E.C.E. of chlorine is )?
Q24easymcqPhysicsPhysics
Consider the following two statements:
(A) Kirchhoff's junction law follows from the conservation of charge.
(B) Kirchhoff's loop law follows from the conservation of energy.
Which of the following is correct?
Q25mediummcqPhysicsPhysics
Two batteries, one of emf 18 V and internal resistance 2 Ω, and the other of emf 12 V and internal resistance 1 Ω, are connected as shown. The voltmeter V will record a reading of :
Q26mediummcqPhysicsPhysics
A potentiometer circuit is set up as shown. The potential gradient, across the potentiometer wire, is and the ammeter reads when two way key is switched off. The balance points, when the key between the terminals (i) 1 and 2 (ii) 1 and 3, is plugged in, are found to be at lengths and respectively. The magnitudes, of the resistors and , in ohms, are:
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Q27hardmcqPhysicsPhysics
A series combination of capacitors, each of value , is charged by a source of potential difference . When another parallel combination of capacitors, each of value , is charged by a source of potential difference , it has the same (total) energy stored in it, as the first combination has. The value of , in terms of , is then:
Q28easymcqPhysicsPhysics
A square surface of side in the plane of the paper is placed in a uniform electric field acting along the same plane at an angle with the horizontal side of the square as shown in figure. The electric flux linked to the surface, in units of volt-m, is:
image
Q29easymcqPhysicsPhysics
Two positive ions, each carrying a charge , are separated by a distance . If is the force of repulsion between the ions, the number of electrons missing from each ion will be ( being the charge on an electron):
Q30easymcqPhysicsPhysics
The dimension of , where is permittivity of free space and is electric field, is:
Q31mediummcqPhysicsPhysics
For the network shown in the figure, the value of the current i is :
Q32mediummcqPhysicsPhysics
A network of four capacitors of capacity equal to C1 = C, C2 = 2C, C3 = 3C and C4 = 4C are connected to a battery as shown in the figure. The ratio of the charges on C2 an C4 is :
Q33mediummcqPhysicsPhysics
Two batteries, one of emf 18 V and internal resistance 2Ω, and the other of emf 12 V and internal resistance 1Ω, are connected as shown. The voltmeter V will record a reading of :
Q34mediummcqPhysicsPhysics
In a circuit, L, C and R are connected in series with an alternating voltage source of frequency f. The current leads the voltage by 45°. The value of C is :
Q35mediummcqPhysicsPhysics
For the network shown in the figure, the value of the current i is :
Q36mediummcqPhysicsPhysics
A network of four capacitors of capacity equal to C1 = C, C2 = 2C, C3 = 3C and C4 = 4C are connected to a battery as shown in the figure. The ratio of the charges on C2 an C4 is :

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