p type semiconductor

Trivalent element like gallium or aluminum is mixed with pure semiconductor like silicon or germanium to make p type semiconductor. Three valence electrons of aluminum make bond with neighboring electrons of silicon. Here three covalent bonds are made. But the ...

Electrical conductivity

The substances by which electricity or charges flow is called medium. It is classified into three types are (i) Conductor, (ii) Semiconductor (iii) Non conductor (i) Conductor: conductor is this substance in which electricity or charges can flow easily. Examples ...

Semiconductor

Three types substances are mainly we have viz solid, liquid and gases. Solids are classified in three types according to electrical conductivities. This substances through electricity or charges can pass easily facing no prevention is called conductors. Conductors of electricity ...

Types of electricity

There are two types of electricity viz Current electricity Static electricity Current electricity:  Electricity means charge. When the charge does not remain confined in one place, it moves one place to another place is called current electricity. We use current ...

What is electromotive force?

 We use radio, television, refrigerators tube light etc in our home appliance. To operate these appliances we need electric energy. There are many kinds of sources of electrical energy like generator, electric cell or battery. Let us consider a torch ...

Keynesian macroeconomic policy

Fiscal policy has powerful effects upon economic activity led to the Keynesian approach to macroeconomic policy which is the active use of government action to moderate business cycles. Keynesian macroeconomics policies are First, the explicit dedication of macroeconomic policy instruments ...

Velocity of money

Why we give money to its value?   Money has value because of its general acceptability. We accept paper dollars because we know that other people will accept dollars later when we try to spend them. Money has value to ...

What are the functions of money?

Definition of Money Money is anything that serves as a commonly accepted medium of exchange or economic transactions. Description of money’s evolution: Some years since, Zelie a singer of the theatre Lyrique at Paris, took part in the Society Islands. ...