Question

Define the terms: charge;potential difference; electric current; resistance and resistivity, with theirsymbols.​

Answer 1

AnswEr:

$\large\bold{\underline{\underline{\sf{\red{Charge}}}}}:-$

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.

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$\large\bold{\underline{\underline{\sf{\red{Potential\: Difference}}}}}:-$

Work done to move one unit charge from another point is called Potential Difference.

Potential Difference symbolized as V [Voltage]

$\rule{120}2$

$\large\bold{\underline{\underline{\sf{\red{Electric\: Current}}}}}:-$

The Flow of Electrons in an Electric Circuit is called electric current.

Electric Current symbolized as I.

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$\large\bold{\underline{\underline{\sf{\red{Resistance}}}}}:-$

The property of substance which opposes the Flow of current is Called resistance.

It is Symbolized as Ohm (Ω).

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$\large\bold{\underline{\underline{\sf{\red{Resistivity}}}}}:-$

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

Answer 2

$\huge{\underline{\underline{\boxed{\sf{\purple{Answer ࿐}}}}}}$

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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