Define the terms: charge;potential difference; electric current; resistance and resistivity, with theirsymbols.
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AnswEr:
Charge is the physical property of Matter which causes a force in electromagnetic field. Electric charge may be Positive or Negative.
Charge is symbolized as C.
Work done to move one unit charge from another point is called Potential Difference.
Potential Difference symbolized as V [Voltage]
The Flow of Electrons in an Electric Circuit is called electric current.
Electric Current symbolized as I.
The property of substance which opposes the Flow of current is Called resistance.
It is Symbolized as Ohm (Ω).
Resistivity is referred as Electric Resistance or Volume Resistivity. It is the measure of the size of any specific material.
It is Symbolized as (rho) ρ
1.] Charge - In physics, a charge is any of many different quantities, such as the electric charge in electromagnetism or the color charge in quantum chromodynamics. Charges correspond to the time-invariant generators of a symmetry group, and specifically, to the generators that commute with the Hamiltonian.
- coloumb (c)
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2.] Potential difference - the difference of electrical potential between two points.
- Volte (V)
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3.] Electric current - An electric current is a stream of charged particles, such as electrons or ions, moving through an electrical conductor or space. It is measured as the net rate of flow of electric charge past a region.
- Ampere (A)
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