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Current Electricity · Physics · WB JEE

MCQ (Single Correct Answer)
25
Subjective
2
MCQ (More than One Correct Answer)
2
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MCQ (Single Correct Answer)

1

A battery of e.m.f. E and internal resistance r is connected to an external resistance R the condition for maximum power transfer is

WB JEE 2008
2

A thin wire of resistance 4 $$\Omega$$ is bent to form a circle. The resistance across any diameter is

WB JEE 2008
3

WB JEE 2024 Physics - Current Electricity Question 1 English

Consider a circuit where a cell of emf $$E_0$$ and internal resistance $$\mathrm{r}$$ is connected across the terminal $$\mathrm{A}$$ and $$\mathrm{B}$$ as shown in figure. The value of $$\mathrm{R}$$ for which the power generated in the circuit is maximum, is given by

WB JEE 2024
4

WB JEE 2023 Physics - Current Electricity Question 2 English

In an experiment on a circuit as shown in the figure, the voltmeter shows 8 V reading. The resistance of the voltmeter is,

WB JEE 2023
5

An amount of charge Q passes through a coil of resistance R. If the current in the coil decreases to zero at a uniform rate during time T, then the amount of heat generated in the coil will be,

WB JEE 2023
6

WB JEE 2022 Physics - Current Electricity Question 8 English

A battery of emf E and internal resistance r is connected with an external resistance R as shown in the figure. The battery will act as a constant voltage source if

WB JEE 2022
7
WB JEE 2021 Physics - Current Electricity Question 9 English
The carbon resistor with colour code is shown in the figure. There is no fourth band in the resistor. The value of the resistance is
WB JEE 2021
8
Two metal wires of identical dimensions are connected in series. If $$\sigma$$1 and $$\sigma$$2 are the electrical conductivities of the metal wires respectively, the effective conductivity of the combination is
WB JEE 2021
9
A galvanometer can be converted to a voltmeter of full scale deflection V0 by connecting a series resistance R1 and can be converted to an ammeter of full scale deflection I0 by connecting a shunt resistance R2. What is the current flowing through the galvanometer at its full scale deflection?
WB JEE 2020
10
WB JEE 2020 Physics - Current Electricity Question 27 English
What will be the equivalent resistance between the terminals A and B of the infinite resistive network shown in the figure?
WB JEE 2020
11
Consider the circuit shown.

WB JEE 2020 Physics - Current Electricity Question 28 English
If all the cells have negligible internal resistance, what will be the current through the 2$$\Omega $$ resistor when steady state is reached?
WB JEE 2020
12
Five identical capacitors, of capacitance 20$$\mu$$F each, are connected to a battery of 150V, in a combination as shown in the diagram. What is the total amount of charge stored?

WB JEE 2019 Physics - Current Electricity Question 25 English
WB JEE 2019
13
What is the current I shown in the given circuit?

WB JEE 2019 Physics - Current Electricity Question 24 English
WB JEE 2019
14
When the value of R in the balanced Wheatstone bridge, shown in the figure, is increased from 5$$\Omega $$ to 7$$\Omega $$, the value of S has to be increased by 3$$\Omega $$ in order to maintain the balance. What is the initial values of S?

WB JEE 2019 Physics - Current Electricity Question 23 English
WB JEE 2019
15
A capacitor of capacitance C is connected in series with a resistance R and DC source of emf E through a key. The capacitor starts charging when the key is closed. By the time the capacitor has been fully charged, what amount of energy is dissipated in the resistance R?

WB JEE 2019 Physics - Current Electricity Question 22 English
WB JEE 2019
16
Four resistors, 100$$\Omega $$, 200$$\Omega $$, 300$$\Omega $$ and 400$$\Omega $$ are connected to form four sides of a square. The resistors can be connected in any order. What is the maximum possible equivalent resistance across the diagonal of the square?
WB JEE 2018
17
What will be current through the 200$$\Omega $$ resistor in the given circuit, a long time after the switch K is made on?

WB JEE 2018 Physics - Current Electricity Question 18 English
WB JEE 2018
18
An electric bulb, a capacitor, a battery and a switch are all in series in a circuit. How does the intensity of light vary when the switch is turn on?
WB JEE 2018
19
Six wires, each of resistance r, are connected so as to form a tetrahedron. The equivalent resistance of the combination when current enters through one corner and leaves through some other corner is
WB JEE 2017
20
Consider the circuit shown in the figure.

WB JEE 2017 Physics - Current Electricity Question 20 English
The value of the resistance X for which the thermal power generated in it is practically independent of small variation of its resistance is
WB JEE 2017
21
WB JEE 2017 Physics - Current Electricity Question 19 English
Consider the circuit shown in the figure where all the resistances are of magnitude 1 k$$\Omega$$. If the current in the extreme right resistance X is 1 mA, the potential difference between A and B is
WB JEE 2017
22
Consider the circuit given here. The potential difference VBC between the points B and C is

WB JEE 2017 Physics - Current Electricity Question 14 English
WB JEE 2017
23
Two wires of same radius having lengths l1 and l2 and resistivities $${{\rho _1}}$$ and $${{\rho _2}}$$ are connected in series. The equivalent resistivity will be
WB JEE 2016
24
Two equal resistances, 400 $$\Omega$$ each, are connected in series with a 8 V battery. If the resistance of first one increases by 0.5%, the change required in the resistance of the second one in order to keep the potential difference across it unaltered is to
WB JEE 2016
25
The effective resistance between A and B in the figure is $${7 \over {12}}\Omega $$ if each side of the cube has 1$$\Omega$$ resistance. The effective resistance between the same two points, when the link AB is removed, is

WB JEE 2016 Physics - Current Electricity Question 21 English
WB JEE 2016

Subjective

1

Two wires each of same material and same length have 2 L 1 ratio of their radii. If the first wire has a resistance of 2 $$\Omega$$ then what will be the equivalent resistance of the two wires when they are connected in series?

WB JEE 2008
2

A 60 W - 220 V bulb is connected in series with another bulb 40 W - 220 V. Which bulb will give more illuminance ?

WB JEE 2008

MCQ (More than One Correct Answer)

1
In the circuit shown in the figure all the resistance are identical and each has the value r$$\Omega $$. The equivalent resistance of the combination between the points A and B will remain unchanged even when the following pairs of points marked in the figure are connected through a resistance R.

WB JEE 2019 Physics - Current Electricity Question 26 English
WB JEE 2019
2
A non-zero current passes through the galvanometer G shown in the circuit when the key K is closed and its value does not change when the key is opened. Then, which of the following statement(s) is/are true?

WB JEE 2018 Physics - Current Electricity Question 16 English
WB JEE 2018
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