List of top Questions asked in GUJCET- 2026

A 15.0 $\mu$F capacitor is connected to a 220 V, 50 Hz source. Then capacitive reactance of the circuit is ______ $\Omega$.
A charged 30 $\mu$F capacitor is connected to a 27 mH inductor. What is the angular frequency of free oscillations of the circuit?
In an ideal step up transformer, the number of turns in primary coil and secondary coil are 100 and 200 respectively. If output current is found to be 5A, then input current will be ______.
A charged particle oscillates about its mean equilibrium position with a frequency of $8 \times 10^9$ Hz. What is the frequency of the electromagnetic waves produced by the oscillator?
If wavelengths of visible rays, microwaves and X-rays are $\lambda_v$, $\lambda_m$ and $\lambda_x$ respectively. Then out of the following which relation is correct one?
A horizontal overhead power line carries a current of 90 A in east to west direction. What is the magnitude and direction of the magnetic field due to the current 1.2 m above the line?
A charged particle having charge $q$ is moving perpendicularly to the uniform magnetic field with linear speed $v$ on a circular path of radius $R$. The periodic time of revolution of a particle ______.
The magnetic susceptibility $\chi$ for superconductors is ______.
Two concentric circular coils, one of small radius $r_1$ and the other of large radius $r_2$, such that $r_1 \ll r_2$, are placed co-axially with centres coinciding. The mutual inductance $M$ of the arrangement is proportional to ______.
A metal rod of length 10 cm and a rectangular cross section of 1 cm $\times$ 1/2 cm is connected to a battery across opposite faces. The resistance will be _____.
The emf of a storage battery of a car is 6.0 V. If internal resistance of the battery is 0.2 $\Omega$, then maximum power drawn from the battery is ____ W.
On increasing the temperature of a conductor, for free electrons ______ increases.
In the moving coil galvanometer, if number of turns in the coil is doubled, then the current sensitivity ______ and the voltage sensitivity ______.
Out of the following impurities, which impurity is not a trivalent?
A proton and a $\alpha$-particle are placed in uniform electric field. Accelerations produced in them are $a_p$ and $a_\alpha$ respectively. Then $a_p : a_\alpha$ will be ______.
If charge $q$ is placed on one of the vertex of a cube, then total electric flux passing through the cube is ______.
Two infinitely long thin straight parallel wires are kept a perpendicular distance $2R$ having uniform linear charge densities $+\lambda$ and $-\lambda$ respectively. The magnitude of electric field at a mid point between two wires will be ______.
A parallel plate capacitor with air between the plates has a capacitance of 1.0 pF. If the distance between the plates is made doubled and space between them is filled with dielectric substance, the capacitance becomes 2.0 pF. Then the value of dielectric constant of dielectric substance is ______.
The total charge on a uniformly charged spherical shell having radius R is Q. Then electric potential at a distance $r = R/2$ from the centre of the shell ______.
The nuclides of $^{197}_{79}\mathrm{Au}$ and $^{196}_{80}\mathrm{Hg}$ are called ______ of each other
When a forward bias is applied to a p-n junction. It ______.
If the output frequency of a full-wave rectifier is 100 Hz, then input frequency will be ______.