If the voltage across a 12 ohm resistor is 4.0 volts, what is the current through the resistor?

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help I am lost :(

2007-05-21 08:44:27 · 4 answers · asked by Eric 1 in Science & Mathematics ➔ Physics

Ohm's Law to the rescue!

I = E/R (Current = voltage / resistance)

I = 4 volts / 12 ohms

I = 1/3 of an amp

2007-05-21 08:50:00 · answer #1 · answered by Navigator 7 · 0⤊ 0⤋

The ratio of voltage V to current I is resistance R

R=V/I

I =V/R=4.0/12=1/3=0.333 ampere

The current through the resistor is 0.333 ampere

2007-05-21 09:06:46 · answer #2 · answered by ukmudgal 6 · 0⤊ 0⤋

V=RI so I = 4/12 = 1/3 amp

2007-05-21 08:48:27 · answer #3 · answered by santmann2002 7 · 0⤊ 0⤋

one third of an amp.

2007-05-25 05:30:04 · answer #4 · answered by johnandeileen2000 7 · 0⤊ 0⤋