Questions in Current Electricity

SelectQuestion
Two wires of the same material and equal length are joined in parallel combination. If one of them has half the thickness of the other and the thinner wire has a resistance of 8 ohms, the resistance of the combination is equal to
In the circuit shown here, what is the value of the unknown resistor R so that the total resistance of the circuit between points P and Q is also equal to R Question Image
A uniform wire of resistance $9 \Omega$ is cut into 3 equal parts. They are connected in the form of equilateral triangle ABC. A cell of e.m.f. 2 V and negligible internal resistance is connected across B and C. Potential difference across AB is
The resistors of resistances $2 \Omega$, $4 \Omega$ and $8 \Omega$ are connected in parallel, then the equivalent resistance of the combination will be
Effective resistance between A and B is Question Image
The effective resistance of two resistors in parallel is $\frac{{12}}{7}\,\,\Omega $ . If one of the resistors is disconnected the resistance becomes $4 \Omega$. The resistance of the other resistor is
Two resistance wires on joining in parallel the resultant resistance is $\frac{6}{5}\,\,ohms$. One of the wire breaks, the effective resistance is 2 ohms. The resistance of the broken wire is
In the circuit, the potential difference across PQ will be nearest to Question Image
Three resistors are connected to form the sides of a triangle ABC, the resistance of the sides AB, BC and CA are 40 ohms, 60 ohms and 100 ohms respectively. The effective resistance between the points A and B in ohms will be
Find the equivalent resistance across AB Question Image

View Selected Questions (0)

Back to Categories

Back to Home