Current Electricity PYQs - Last 5 Years

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All Current Electricity PYQs Last 10 Years Create chapter test

Practice 35 KCET Physics questions from Current Electricity. Use the year-wise and type-wise breakdown to prioritize recent PYQs, then continue into the question list below.

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Last 5 Years Current Electricity Questions

Showing 35 of 35 filtered questions.

1Current Electricity

The number of electrons moving per second through the filament of a lamp of $60$ W operating at $120$ V is nearly $(e = 1.6 \times 10^{-19}\text{ C})$ _____________.

2Current Electricity

Given below are two statements:Statement-I: The resistivity of a conductor is independent of its temperature.Statement-II: The resistivity of a semiconductor decreases with increase in temperature.Select the correct option.

3Current Electricity

Current flowing through a wire decreases linearly from $10$ A to zero in $4$ s as shown in the graph. Find the total charge flowing through the wire in the given time interval.

4Current Electricity

In a conducting region, $10^{19}$ electrons and $10^{19}$ protons move to the left, while $10^{19}$ $\alpha$-particles move to the right per second. The resulting electric current is $(e = 1.6 \times 10^{-19}\text{ C})$ _________

5Current Electricity

Which of the following circuits is correct for verification of Ohm's law?

6Current Electricity

In the figure, the values of currents $I_1, I_2$ and $I_3$ respectively are

7Current Electricity

The variations of resistivity $\rho$ with absolute temperature T for three different materials $\mathrm{X}, \mathrm{Y}$ and Z are shown in the graph below. Identify the materials $\mathrm{X}, \mathrm{Y}$ and Z .

8Current Electricity

Two similar galvanometers are covered into an ammeter and a milliammeter. The shunt resistance of ammeter as compared to the shunt resistance of milliammeter will be

9Current Electricity

Two cells of emfs $E_1$ and $E_2$ and internal resistances $r_1$ and $r_2\left(E_2>E_1\right.$ and $\left.r_2>r_1\right)$ respectively, are connected in parallel as shown in figure. The equivalent emf of the combination is $\mathrm{E}_{\tex...

10Current Electricity

In an experiment to determine the figure of merit of a galvanometer by half deflection method, a student constructed the following circuit.

He unplugged a resistance of $5200 \Omega$ in R . When $\mathrm{K}_1$ is closed and $\mathrm{K}_2$ ...

11Current Electricity

\(\text { In the following circuit, the terminal voltage across the cell is }\)

12Current Electricity

The graph between variation of resistance of a metal wire as a function of its diameter keeping other parameters like length and temperature constant is

13Current Electricity

The range of electrical conductivity $(\sigma)$ and resistivity $(\rho)$ for metals, among the following, is

14Current Electricity

Given, a current carrying wire of non-uniform cross-section, which of the following is constant throughout the length of wire?

15Current Electricity

In an experiment to determine the temperature coefficient of resistance of a conductor, a coil of wire $X$ is immersed in a liquid. It is heated by an external agent. A meter bridge set up is used to determine resistance of the coil $X$ at ...

16Current Electricity

The electric current flowing through a given conductor varies with time as shown in the graph below. The number of free electrons which flow through a given cross-section of the conductor in the time interval $0 \leq t \leq 20 \mathrm{~s}$ ...

17Current Electricity

The $I-V$ graph for a conductor at two different temperatures $100^{\circ} \mathrm{C}$ and $400^{\circ} \mathrm{C}$ is as shown in the figure. The temperature coefficient of resistance of the conductor is about (in per degree Celsius)

18Current Electricity

In the circuit shown, the end $A$ is at potential $V_0$ and end $B$ is grounded. The electric current $I$ indicated in the circuit is

19Current Electricity

An electric blub of $60 \mathrm{~W}, 120 \mathrm{~V}$ is to be connected to 220 V source. What resistance should be connected in series with the bulb, so that the bulb glows properly?

20Current Electricity

E is the electric field inside a conductor whose material has conductivity $\sigma$ and resistivity $\rho$. The current density inside the conductor is $\mathbf{J}$. The correct form of Ohm's law is

21Current Electricity

A moving coil galvanometer is converted into an ammeter of range 0 to \(5 \mathrm{~mA}\). The galvanometer resistance is \(90 \Omega\) and the shunt resistance has a value of \(10 \Omega\). If there are 50 divisions in the galvanometer-turn...

22Current Electricity

The four bands of a colour coded resistor are of the colours grey, red, gold and gold. The value of the resistance of the resistor is

23Current Electricity

The resistance of a carbon resistor is \(4.7 ~\mathrm{k} \Omega \pm 5 \%\). The colour of the third band is

24Current Electricity

The equivalent resistance between the points A and B in the following circuit is

25Current Electricity

Ten identical cells each emf \(2 \mathrm{~V}\) and internal resistance \(1 ~\Omega\) are connected in series with two cells wrongly connected. A resistor of \(10 ~\Omega\) is connected to the combination. What is the current through the res...

26Current Electricity

For a given electric current the drift velocity of conduction electrons in a copper wire is \(v_d\) and their mobility is \(\mu\). When the current is increased at constant temperature

27Current Electricity

A wire of resistance \(R\) is connected across a cell of emf \((\varepsilon)\) and internal resistance \((r)\). The current through the circuit is \(I\). In time \(t\), the work done by the battery to establish the current \(I\) is

28Current Electricity

If voltage across a bulb rated \(220 \mathrm{~V}, 100 \mathrm{~W}\) drops by \(2.5 \%\) of its rated value, then the percentage of the rated value by which the power would decrease is

29Current Electricity

A galvanometer of resistance \(50 \Omega\) is connected to a battery \(3 \mathrm{~V}\) along with a resistance \(2950 \Omega\) in series. A full scale deflection of 30 divisions is obtained in the galvanometer. In order to reduce this defle...

30Current Electricity

A wire of a certain material is stretched slowly by \(10 \%\). Its new resistance and specific resistance becomes respectively

31Current Electricity

When a metal conductor connected to left gap of a meter bridge is heated, the balancing point

32Current Electricity

In an atom electrons revolve around the nucleus along a path of radius \(0.72\mathop A\limits^o\) making \(9.4 \times 10^{18}\) revolutions per second. The equivalent currents is [given, \(e=1.6 \times 10^{-19} \mathrm{C}\)]

33Current Electricity

10 identical cells each potential \(E\) and internal resistance \(r\) are connected in series to form a closed circuit.

Determine the potential difference across three cells using an ideal voltmeter.

34Current Electricity

Wire bound resistors are made by winding the wires of an alloy of

35Current Electricity

A charged particle is moving in an electric field of \(3 \times 10^{-10} \mathrm{Vm}^{-1}\) with mobility \(2.5 \times 10^6 \mathrm{~m}^2 / \mathrm{V}-\mathrm{s}\), its drift velocity is