Nepal has a high potential for producing hydroelectricity, but it is difficult to produce. Justify this statement.

We all know, Nepal is a country that is rich enough in water resources. Hundreds of fast-flowing rivers are found in our country. And water is the main agent to produce hydroelectricity. Due to the presence of many large and small rivers & rivulets, we have the high potentiality of generating electricity. But it is very difficult to construct hydropower stations in the various parts of the country because of the difficult topography....

How is single electrode potential originated?

The electrical potential difference set up between the metal electrode and its solution is known as electrode potential. The single electrode potential is originated by the separation of charges between the metal electrode and its solution.

What are cathode rays? write their two properties.

Cathode rays are negatively charged streams of particles arising from the cathode of an electric discharge tube at low pressure and high electric potential.

Any two properties of cathode rays are:

1. They are negatively charged particles so, they suffer deflection in electric and magnetic fields.
2. They travel with 1/10 of the velocity of light.

The electric potential of earth is same every where why?

Different charges q1,q2,q3.... are placed at r1,r2,r3,... respectively in an electrostatic field. Write expressions for the total electric potential and intensity at R in proper notations. r1,r2,r3...

Prove that :Electric field intensity(E)= potential difference (V)/distance between two plates(d)i.e. E=V/d

V=W/q 

V=Fd/q 

V=F/q*d 

V=E.d [E=F/q] 

E=V/d

Explain the formation of potential barrier and depletion region in p-n junction.

In a p-n junction, the formation of a potential barrier and depletion region occurs due to the diffusion of majority charge carriers. When a p-type semiconductor (with positive charge carriers, or "holes") is brought into contact with an n-type semiconductor (with negative charge carriers, or "electrons"), diffusion takes place. Electrons from the n-side diffuse towards the p-side, while holes from the p-side diffuse towards the n-side. This diffusion process continues until equilibrium is...