List of top Questions asked in AP EAPCET- 2023

In order to quadruple the resistan of a uniform wire, a part of it is uniformly stretched so that the final length of the wire becomes $1.5$ times the original length. The fractional length of the stretched part is

In the circuit, the value of the current, $I$ is

If \(n\), \(e\), \(\tau\), and \(m\) represent the concentration, the charge, the relaxation time, and the mass of an electron in a metal, then the resistance of a wire made of the metal of length \(l\) and cross-sectional area \(A\) is:
In a potentiometer experiment, the balancing length with a cell is \(240~\text{cm}\). On shunting the cell with \(2~\Omega\), the balancing length becomes \(120~\text{cm}\). The internal resistance of the cell is
In the circuit with 6 V battery and resistors of 2Ω each, current is 2 A. Find potential at B with respect to A.
circuit with 6 V battery and resistors of 2 each
Choose the correct option with respect to the statements A and B.
Among the following, velocity \( v \) - time \( t \) graph representing the motion of a vertically projected body is:
At any instant \( t \), the vertical distance \( Y \) and horizontal distance \( X \) of a projectile are given by \[ 2Y = 6t - g t^2 \quad \text{and} \quad X = 4t, \] The initial velocity of the projectile is:
The time of flight of a vertically projected stone is 8 s. The position of the stone after 6 s from the ground is
If the maximum range of a projectile is $R$, then the maximum height reached by the projectile is
If a stone is projected at certain angle ‘θ’ with the horizontal such that its horizontal range is equal to its maximum height, then angle of projection ‘θ’ is
When the current through an inductor is changed from 2 A to 6 A in time 2 s, emf induced in it is 3 V. Then the inductance of the inductor is
Total emf induced in a coil with \( N \) turns and changing magnetic flux \( \frac{d\phi_B}{dt} \) is:
An ac generator converts
The average power output of a point source of an electromagnetic radiation is 1080 W. The maximum value of the rms value of the electric field at a distance of 3 m from the source is
A circular coil of radius 10 cm and resistan of $2~\Omega$ is plad with its plane perpendicular to the horizontal component of the earth's magnetic field. It is rotated about its vertical diameter through $180^\circ$ in 0.25 s. If the magnitude of the indud emf is $3.8 \times 10^{-3} \text{ V}$, then the number of turns of the coil is (Horizontal component of earth's magnetic field at the pla is $3 \times 10^{-5} \text{ T}$)
Changing magnetic fields can set up current loops in nearby metal bodies. They dissipate electrical energy as heat. Such currents are called
The ratio of the flux-linkage to current is
An inductor is connected to an ac source of frequency 50 Hz. The frequency of the instantaneous power developed in the circuit is
Physically, the self-inductance plays the role of:
A body is made to move up along an inclined plane of inclination \(30^\circ\) and the coefficient of friction is 0.5, then its retardation is:
The maximum possible height of a mountain on Earth is approximately.
A car of mass 1500 kg is moving with 20 ms\(^{-1}\) velocity. If the breaks are applied it comes to rest in 5 seconds, then the retarding force is
A machine gun fires 300 bullets per minute each with a velocity of 500 ms\(^{-1}\). If the mass of each bullet is 4 g, the power of the machine gun is:
A body falls freely from a height of 100 m on to the ground and rebounds to a maximum height of 36 m after collision. The coefficient of restitution between the ground and the body is: