List of top Physics Questions on Current electricity

Ten 100 W light bulb burns on an average of 10 hours a day for one week. The weekly consumption of energy will be ____ units.
When the switch S in the circuit shown is closed, then the value of current i will be ____.

How are 50Ω resistors connected so as to give effective resistance of 75Ω.
Find the current through the $40\text{ }\Omega$ resistor in the given circuit containing an ideal diode, three resistors, and two cells.
A parallel combination of 'n' cells of emf 'E' and internal resistance each, are connected across the external resistance 'R'. If the external resistance 'R' is negligibly small, then the current 'I' through the external resistance is:
A galvanometer of resistance $50\text{ }\Omega$ has $30$ divisions and a current sensitivity of $1\text{ mA/div}$. What should be the shunt resistance so that it can be converted into an ammeter of range $10\text{ A}$?
According to Ohm’s law: ____.
To convert a galvanometer into a voltmeter, one must connect a:
Which Instrument measures electric current?
A battery of emf 10 volts and internal resistance 3 \(\Omega\) is connected to a resistor. If the current in the circuit is 0.5 A, what is the resistance of the resistor?
Ohm's law is valid when:
A current of \(2\,\text{A}\) flows through a resistor for \(10\) minutes. What is the total charge that passes through the resistor?
In a common emitter transistor amplifier, the audio signal voltage across the collector resistance of \(2\,k\Omega\) is \(2V\). If the current amplification factor (\(\beta\)) is \(100\) and the base resistance is \(1\,k\Omega\), find the input signal voltage.
Which of the following circuits is correct for verification of Ohm's law?
Current flowing through a wire decreases linearly from 10A to zero in 4s as shown in the graph. Find the total charge flowing through the wire in the given time interval.
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.
The number of electrons moving per second through the filament of a lamp of 60W operating at 120V is nearly (e = 1.6 \(\times\) 10\(^{-19}\) C) \textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore
In the figure, the values of currents I\(_1\), I\(_2\) and I\(_3\) respectively are
What is the shunt resistance \(S\) needed if the galvanometer current \(I_g\) is \(8\%\) of the total current \(I\)?
If three cells each of emf $2,V$ and internal resistance $1,\Omega$ are connected to a resistor of $4.5,\Omega$ as shown, then the current through the resistor is
With increase in temperature, the resistivity of
If the resistance of a uniform wire of length $1,m$ of cross-sectional area $0.1,m^2$ is $12,\Omega$, then the resistance of wire of length $2,m$ of the same material with area of cross section $0.2,m^2$ is
The maximum rated power of the LED is $2 \text{ mW}$ and it is used in the circuit with input voltage of $5 \text{ V}$ as shown in the figure below. The current through resistance $R$ is $0.5 \text{ mA}$. The minimum value of the resistance $R_s$, to ensure that the LED is not damaged is ______ $\text{k}\Omega$.

In the provided circuit, the input voltage is $5 \text{ V}$, a series resistor $R_s$ is connected, and the circuit then branches into two parallel paths: one with a resistor $R = 1 \text{ k}\Omega$ in series with a Zener diode, and another with the LED.
Two identical cells having internal resistance $1\Omega$ and emf 6v and 2v are connected in series with external resistance $4\Omega$, find current throught external resistance
If temperature is constant and the electric field is doubled then the drift velocity of electrons in a conductor.