List of top Physics Questions on Current electricity asked in AMUEEE

Figure shows a potentiometer. Length of the potentiometer wire $ AB $ is $ 100 \,cm $ and its resistance is $ 100\, \Omega $ . $ EMF $ of the battery $ E $ is $ 2 V $ . A resistance $ R $ of $ 50 \Omega $ draws current from the potentiometer. What is the voltage across $ R $ when the sliding contact $ C $ is at the mid-point of $ AB $ ?
Figure shows a potentiometer. Length of the potentiometer wire $ AB $ is $ 100 \,cm $ and its resistance is $ 100\, \Omega $ . $ EMF $ of the battery $ E $ is $ 2 V $ . A resistance $ R $ of $ 50 \Omega $ draws current from the potentiometer. What is the voltage across $ R $ when the sliding contact $ C $ is at the mid-point of $ AB $ ?
Three resistances $P, Q, R$ each of $2\, \Omega$ and an unknown resistance $S$ form the four arms of a Wheatstone bridge circuit. When a resistance of $6\, \Omega$ is connected in parallel to $S$ the bridge gets balanced. What is the value of $S$ ?
A wire when connected to $220\, V$ mains supply has power dissipation $P_1$. Now the wire is cut into two equal pieces which are connected in parallel to the same supply. Power dissipation in this case is $P_2 \, then \, P_2 : P_1$ is
Arrange the following materials in the increasing order of their resistivity. Copper, Platinum, Silver, Aluminium
In a given circuit, each cell has an emf of $0.15\, V$ and internal resistance of $0.25 \, \Omega $ . Find the current in the circuit.
In the potentiometer circuit shown in the figure, the balance length $AJ = 58$ when switch $S$ is open. When switch S is closed and the value of $ R=5\,\Omega $ , balance length $AJ' = 50 \,cm$. The internal resistance of the cell $C'$ is
A battery of emf $ 8V $ with internal resistance $ 0.5 \, \Omega$ is being charged by a $ 120 \,V\, d.c. $ supply using a series resistance of $ 15.5 \Omega $ . The terminal voltage of the battery is
Two wires $A$ and $B$ of equal masses and of the same metal are taken. The diameter of the wire $A$ is half the diameter of the wire $B$. If the resistance of wire $A$ be $24\, \Omega $ , the resistance of $B$ will be
For the current loops shown in the figure, Kirchhoff's loop rule for the loops $A H D C B A$ and AHDEFGA yields these equations respectively
The equivalent resistance between $A$ and $B$ (of the circuit shown) is
A $2 \,kW$ boiler used for $1\, h/$day consumes the following electrical energy in thirty days