Back EMF Equation and Calculating A/C Starter Current | Homework Example

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The discussion centers on calculating the current for an A/C starter with a 12V supply and a back EMF of 6V, using a resistance of 0.1 ohms. The start-up current is calculated to be 120A, while the operating current is determined to be 60A. The equation used for these calculations is E=IR. Participants confirm the calculations appear correct. The thread also includes a question about the meaning of the abbreviation "A/C."
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Homework Statement


An A/C starter has a 12V supply & a back EMF of 6V. If the resistance is 0.1 ohms, calculate current during start-up & while in operation

Homework Equations


E=IR
Not sure what else? Sorry I am stuck.

The Attempt at a Solution


Start up current
E=IR
12V=I x .01
I = 120A

operating current
6V=I x .01
I = 60A
 
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Girn said:
Start up current
E=IR
12V=I x .01
I = 120A

operating current
6V=I x .01
I = 60A
Looks correct.
 
Girn said:
An A/C starter has a 12V supply & a back EMF of 6V.
What is A/C[/color] an abbreviation for?
 

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