# what current flows through a 9 volt battery with 10 ohms across the battery?

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• Use OHMs law: E= IxR. E is voltage, I is current (amperes) and R is resistance (OHMs). I'll forgive you if you never took Algebra 1. E=9, R=10 and you want to calculate I. I would come out to 9/10..... nine tenths of an ampere, since E/R=I.

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• Anonymous
3 months ago

Theoretically, 900 mA.  I = E/R. P = I x E.

Depends on size of  conductors, A/Hr rating of battery. And, if resistor can safely dissipate 8.1 watts. It should be rated at 12 watts for safety. Wires need  to be  #24 AWG  or bigger and very short so  they don't drop too much voltage.

U can detonate an electric blasting cap, Once, w/a 9 volt alkaline. These  require 2 volts at one amp,  suddenly, not a gradual rise in current.

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• I'll explain it to you the way it was explained to me.

Elmer has two girlfriends, Iris and Rose.

When Rose is away, Elmer is over Iris.  R = E/I.

When Iris is away, Elmer is over Rose.  I = E/R.

And when Elmer is away, the girls get together.  E = I*R.

That's how it was taught back in the day.

• You're an old guy, I had an instructor that got fired back in the 80's for teaching us- Bad Boys Rape Our Young Girls But Violet Goes Willingly - resistor code memory tool

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• What current flows through a 10 ohm load at 9 volts?

E/R = I

9/10 = .9 amps

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