How Do Electrical Equations Help Calculate Charge and Electron Flow in Circuits?

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SUMMARY

This discussion focuses on calculating charge and electron flow in electrical circuits using fundamental equations. Key variables include 1C = 6.24 x 1018 electrons, e = 1.60 x 10-19 Coulombs, and the current formula I = Q/T. The user correctly calculated the charge passing through an electric lamp with a current of 0.82 A over 10 minutes as 492 Coulombs, but misinterpreted the sign in their result. For calculating the number of electrons, the conversion from Coulombs to electrons is clarified using the relationship of 1 Coulomb equaling 6.24 x 1018 electrons.

PREREQUISITES
  • Understanding of basic electrical concepts such as current (I), charge (Q), and time (T).
  • Familiarity with Coulomb's Law and its application in calculating forces between charged particles.
  • Knowledge of unit conversions between Coulombs and electrons.
  • Basic algebra skills for manipulating equations and solving for unknowns.
NEXT STEPS
  • Study the derivation and applications of Coulomb's Law in electrostatics.
  • Learn about the relationship between current, charge, and time in electrical circuits.
  • Explore the concept of electron flow and its significance in electrical engineering.
  • Investigate practical examples of charge calculations in various electrical components.
USEFUL FOR

This discussion is beneficial for students studying physics, electrical engineers, and anyone interested in understanding the principles of charge and electron flow in circuits.

runicle
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Can you please explain me in lamens terms what are these variables names and what they give:
-
1c=6.24 * 10^18
e=1.60 * 10^-19
Q=Ne
Fe=KQ1Q2/d^2
I=Q/T
1A = 1C/1s
-
And How would i do this question with the stuff i have written above this line?
-
A current of 0.82 A flows through an electric lamp for 10 min. In that time how much charge passes a given spot in the filament expressed in
(a)Coulombs
(b)Electrons
-
For (a) i think I need to use 1A = 1C/1s
So C=A*S
-C=0.82 A (600s)
-C=492
But in the back of my book its -492 explain what i did wrong
-
For (b) I think i don't know what to use I'm
 
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