Arihant Physics by D.C Pandey
A 200Ω resistor has a certain color code. If one replaces the red color by green in the code, the new resistance will be
05
Dec
A 200Ω resistor has a certain color code. If one replaces the red color by green in the code, the new resistance will be A 200Ω resistor has a certain color code. If one replaces the red color by green in the code the new resistance will be December 5, 2020 Category: Arihant Physics by [...]
Identical charges of magnitude Q are placed at (n−1) corners of a regular polygon of n sides each corner of the polygon is at a distance r from the centre. The field at the centre is
05
Dec
Identical charges of magnitude Q are placed at (n−1) corners of a regular polygon of n sides each corner of the polygon is at a distance r from the centre. The field at the centre is Identical charges of magnitude Q are placed at (n−1) corners of a regular polygon of n sides each corner [...]
A pendulum bob of mass ′ m ′ and charge ′ q ′ is suspended by a thread of length l. The pendulum is placed in a region of a uniform electric field E directed vertically upward. If the electrostatic force acting on the sphere is less than that of gravitational force, the period with which the pendulum oscillates is: (Assume small oscillation).
05
Dec
A pendulum bob of mass ′ m ′ and charge ′ q ′ is suspended by a thread of length l. The pendulum is placed in a region of a uniform electric field E directed vertically upward. If the electrostatic force acting on the sphere is less than that of gravitational force, the period with [...]
An electron is projected with velocity 10^7m/s at an angle θ(=30∘) with horizontal, in a region of uniform electric field of 5000 N/C vertically upwards. Find the maximum distance covered by an electron in vertical direction above its initial level
05
Dec
An electron is projected with velocity 10^7m/s at an angle θ(=30∘) with horizontal, in a region of uniform electric field of 5000 N/C vertically upwards. Find the maximum distance covered by an electron in vertical direction above its initial level An electron is projected with velocity 10^7m/s at an angle θ(=30∘) with horizontal in a [...]
An electron of mass m and charge e leaves the lower plate of a parallel plate capacitor of length L, with an initial velocity v0 making an angle α with the plate and come out of the capacitor making an angle β to the plate. The electric field intensity between the plates.
05
Dec
An electron of mass m and charge e leaves the lower plate of a parallel plate capacitor of length L, with an initial velocity v0 making an angle α with the plate and come out of the capacitor making an angle β to the plate. The electric field intensity between the plates. An electron of [...]
An oil drop of charge of 2 electrons fall freely with a terminal speed. The mass of oil drop so, it can move upward with same terminal speed, if electric field of 2×10^3 V/m is applied, is
05
Dec
An oil drop of charge of 2 electrons fall freely with a terminal speed. The mass of oil drop so, it can move upward with same terminal speed, if electric field of 2×10^3 V/m is applied, is An oil drop of charge of 2 electrons fall freely with a terminal speed. The mass of oil [...]
A copper ball of density pc and diameter d is immersed in oil of density po. What charge should be present on the ball , so that it could be suspended in the oil, if a homogeneous electric field E is applied vertically upward?
05
Dec
A copper ball of density pc and diameter d is immersed in oil of density po. What charge should be present on the ball , so that it could be suspended in the oil, if a homogeneous electric field E is applied vertically upward? A copper ball of density pc and diameter d is immersed [...]
Two charged particles of charge +2q and +q have masses m and 2m respectively. They are kept in uniform electric field allowed to move for the same time. Find the ratio of their kinetic energies.
05
Dec
Two charged particles of charge +2q and +q have masses m and 2m respectively. They are kept in uniform electric field allowed to move for the same time. Find the ratio of their kinetic energies. Two charged particles of charge +2q and +q have masses m and 2m respectively. They are kept in uniform electric [...]
In the diagram shown electric field intensity will be zero at a point:
05
Dec
In the diagram shown electric field intensity will be zero at a point: In the diagram shown electric field intensity will be zero at a point: December 5, 2020 Category: Arihant Physics by D.C Pandey , Chapter 1 - Electric Charges and Fields , Volume 2 ,
An infinite plane consists of a positive charge and has σC/m^2 surface charge density. Calculate the angle θ, if a metallic ball B of mass m and charge +Q is attached to a thread and tied to a point A on the sheet PQ, as shown in figure: (ϵ0 = permittivity of air).
05
Dec
An infinite plane consists of a positive charge and has σC/m^2 surface charge density. Calculate the angle θ, if a metallic ball B of mass m and charge +Q is attached to a thread and tied to a point A on the sheet PQ, as shown in figure: (ϵ0 = permittivity of air). An infinite [...]