JEE Main · 2026 · 22 Jan 2026 · Shift 2 · Current Electricity

A meter bridge with two resistances $R_1$ and $R_2$ as shown in figure was balanced (null point) at 40 cm from the point P. The null point changed to 50 cm from the point P, when $16\Omega$ resistance is connected in parallel to $R_2$. The values of resistances $R_1$ and $R_2$ ar …

A cylindrical conductor of length 2 m and area of cross-section $0.2{\mathrm{mm}}^2$ carries an electric current of 1.6 A when its ends are connected to a 2 V battery. Mobility of electrons in the conductor is $\alpha \times 10^{-3}{\mathrm{m}}^2/\mathrm{V}$.s. The value of …

The charge stored by the capacitor C in the given circuit in the steady state is $\_\_\_\_$ $\mu \mathrm{C}$.

The total length of potentiometer wire AB is 50 cm in the arrangement as shown in figure. If P is the point where the galvanometer shows zero reading then the length AP is $\_\_\_\_$ cm .

A battery with EMF E and internal resistance $r$ is connected across a resistance $R$. The power consumption in R will be maximum when :

Two known resistance of $\mathrm{R}\Omega$ and $2\mathrm{R}\Omega$ and and one unknown resistance $\mathrm{X}\Omega$ are connected in a circuit as shown in the figure. If the equivalent resistance between points A and B in the circuit is $\mathrm{X}\Omega$, then the …