Question
Define electric field strength. Is it a vector or a scalar quantity?
✓
Answer
The electric field strength at a point in an electric field is defined as the electrostatic force acting on a unit positive charge when placed at that point and its direction is along the direction of electrostatic force.
Electric field strength is a vector quantity.
Electric field strength is a vector quantity.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Find the maximum angle of refraction when a light ray is refracted from glass $(\mu=1.50)$ to air.
→A charge $Q$ is placed at the centre of an imaginary hemispherical surface. Using symmetry arguments and the Gauss's law, find the flux of the electric field due to this charge through the surface of the hemisphere $($figure$).$
→Can a virtual image be photographed by a camera?
A photographic film is coated with a silver bromide layer. When light fells on this film, silver bromide molecules dissociate end the film records the light there. A minimum of $0.6\ eV$ is needed to dissociate a silver bromide molecule. Find the maximum wavelength of light that can be recorded by the film.
→A neutron having kinetic energy 12.5eV collides with a hydrogen atom at rest. Nelgect the difference in mass between the neutron and the hydrogen atom and assume that the neutron does not leave its line of motion. Find the possible kinetic energies of the neutron after the event.
Explain current formed in solid conductors in presence of external electric field.
Two transparent slabs having equal thickness but different refractive indices $\mu_1$ and $\mu_2$ are pasted side by side to form a composite slab. This slab is placed just after the double slit in a Young's experiment so that the light from one slit goes through one material and the light from the other slit goes through the other material. What should be the minimum thickness of the slab so that there is a minimum at the point $P_0$ which is equidistant from the slits?
→Describe briefly, with the help of a diagram, the role of the two important processes involved in the formation of a p-n junction.
By what percent will the capacitance of a spherical conductor increase if the amount of charge on a spherical conductor is tripled?
Calculate the potential energy of a single charge in an external field.