Jee Physics 30

18 Modules•Curated Set

alternating current

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All questions in Jee Physics 30

A charge q is placed at the center of a cube of side a. The electric flux passing through one face o
In a potentiometer experiment, the balancing length for a cell of EMF 1.5V is 60cm. If the cell is r
The magnetic susceptibility of a paramagnetic material strictly depends on temperature T as:
A straight wire of length 0.5m carries a current of 2A. It is placed in a uniform magnetic field of
If the instantaneous current is i = 4 sin(100πt + π/3) A, then the RMS value of current is:
The current in a coil changes from 5A to 1A in 0.1s. If the induced EMF is 8V, the coefficient of se
The electric potential at the centre of a charged hollow metal sphere is:
The logic gate shown in the figure represents:
The resistance of each arm of the Wheatstone bridge is 10 Ohm. A resistance of 10 Ohm is connected i
A circular coil of radius R carries a current I. The ratio of magnetic field at the centre to the fi
A coil of resistance 10Ω and 100 turns has a diameter of 20cm. It is placed with its plane perpendic
In a series LCR circuit, R=10Ω, XL=20Ω, and XC=20Ω. The impedance of the circuit is:
If Force (F), Velocity (V), and Time (T) are taken as fundamental units, then the dimensions of Mass
Two point charges +q and -4q are placed at x=0 and x=L respectively. At what point on the x-axis is
In the given circuit, find the value of current I.
A parallel plate capacitor has capacitance C. If a dielectric slab of dielectric constant K is inser
A steel wire of length L and cross-sectional area A is stretched by a force F. The work done in stre
A particle executes SHM with an amplitude of 5 cm. When the particle is at 4 cm from the mean positi
Water flows through a horizontal pipe. The area of cross-section at one place is 10 cm^2 and velocit
The height at which the acceleration due to gravity becomes g/9 (where g is surface gravity) in term
Two cars A and B are moving with velocities 10 m/s and 20 m/s respectively in the same direction. Ca
A Carnot engine works between temperatures 27°C and 127°C. The efficiency of the engine is:
A whistle revolves in a circle with angular speed ω = 20 rad/s using a string of length 50 cm. If th
A solid cylinder produces only Rolling Motion on rough horizontal surface with initial velocity v. T
A satellite is revolving in a circular orbit at a height h from the earth's surface (radius of earth
A particle of mass m moving with speed v collides elastically with another particle of mass 2m at re
A block of mass 10 kg is placed on a rough horizontal surface having a coefficient of friction µ = 0
In the system shown, the pulley and string are ideal. If the acceleration of block A (mass m) is a u
Four spheres of diameter 2a and mass M are placed with their centres on the four corners of a square
A projectile is fired with a velocity u at an angle θ with the horizontal. At the highest point of i