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Electricity

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What is the equation linking charge, current and time?

3 years ago

ยท

6 Replies

ยท

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M

Marjolaine Borer


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6 Answers

James H Profile Picture
James H Verified Sherpa Tutor โœ“

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Charge=current x time

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Rosie B Profile Picture
Rosie B Verified Sherpa Tutor โœ“

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Q = It,

Q is charge, I is current, t is time

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J. Singh Profile Picture
J. Singh Verified Sherpa Tutor โœ“

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The relationship between charge (Q), current (I), and time (t) is as follows:

An electric current (I) is defined as a rate of flow of charged particles.

Current (I) = Amount of Charge (Q)/time taken (t)

I=Q/t


An extra piece of information:

  1. In the SI (Standard International) system of units, the amount of charge is measured in "Coulombs" and time in "seconds". Thus SI unit of current is Coulomb/second which is known as Ampere (A).
  2. In the metallic conductors, the charged particles are free electrons and the net flow of these electrons in one direction is known as electric current. Keep in mind, we need a source of energy, for example, a cell or battery, to make the free electrons move in the same direction.

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Ciaran M Profile Picture
Ciaran M Verified Sherpa Tutor โœ“

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The charge equals the product of the current and the time.

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A
Alice D

Hi Marjolaine! The equation most commonly used is Q = It, where Q is the charge, I is the current and t is the time.

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Mayankkumar Shravanbhai Maheshwari

current is directly proportional to charge and inversely proportional to time. So, equation is I=Q/t

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