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:
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The logic gate shown in the figure represents:
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 resistance of each arm of the Wheatstone bridge is 10 Ohm. A resistance of 10 Ohm is connected i
In a series LCR circuit, R=10Ω, XL=20Ω, and XC=20Ω. The impedance of the circuit is:
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 the given circuit, find the value of current I.
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
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 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
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
A particle executes SHM with an amplitude of 5 cm. When the particle is at 4 cm from the mean positi
Two cars A and B are moving with velocities 10 m/s and 20 m/s respectively in the same direction. Ca
A particle of mass m moving with speed v collides elastically with another particle of mass 2m at re
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A solid cylinder produces only Rolling Motion on rough horizontal surface with initial velocity v. T
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