Calculating the Current Through a 10-ohm Resistor

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SUMMARY

The discussion centers on calculating the current through a 10-ohm resistor given a charge of 1200 coulombs flowing over 4 minutes. The correct calculation yields a current of 5.0 A using the formula I = Q/t, where Q is the charge and t is the time in seconds. Despite the book suggesting an answer of 15 A, participants confirm that the initial calculation is accurate and that the resistance value does not affect the current calculation in this context.

PREREQUISITES
  • Understanding of Ohm's Law
  • Knowledge of basic electrical units (coulombs, amperes, seconds)
  • Ability to perform unit conversions (minutes to seconds)
  • Familiarity with the formula I = Q/t
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  • Review Ohm's Law and its applications in circuit analysis
  • Explore the relationship between charge, current, and time in electrical circuits
  • Learn about common misconceptions in electrical calculations
  • Practice problems involving current calculations with varying resistance values
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Students studying electrical engineering, physics enthusiasts, and anyone looking to strengthen their understanding of current calculations in resistive circuits.

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Homework Statement



A 10-ohm resistor has a constant current. If 1200 C of charge flow through it in 4 minutes what is the value of the current?
A) 3.0 A
B) 5.0 A
C) 11 A
D) 15 A
E) 20 A


The Attempt at a Solution



I get B as an answer. I=(Q/t). I= 1200C/ (4 * 60) = 5.0 A
The book says the answer is D. I thought the problem provided to much information. Can someone explain how D might be an answer.
 
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Your method and answer are correct; answer D is not. The value of the resistance is irrevelant to the question asked, but don't let that distract you. :wink:
 
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