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Is V = IR Correct as per the my example

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pasidu

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Dear All

Have a nice day!

Lest assume 1.5v AAA battery connect with copper wire ( short circuit)

Then

Copper wire resistance is ~ 0.1

Then as per the V + IR

I = V/R
I = 1.5/0.1

I = 15A

Is it correct ?

Please advice
 

Hi,

Yes. For an ideal voltage source.

But real voltage sorces have internal resistance.
I don't know what's a realistic value for an AAA battery, but I assume it is higher than 0.1 Ohms.

Klaus
 

No you should consider internal resistance of battery, it will resist the high current discharge when you shorting
 

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