Posted by **physics** on Sunday, March 15, 2009 at 4:35pm.

The potential differnece across a resistor is 4.4 * 10^2 V. If the resistance of the resistor is 1.8 k ohms, how much current flows throught the resistor?

R=1.8 k ohms

I=?

4.4*10^2 V

V=IR

I=V/R

= 4.4 * 10^2

___________ = 2.44*10

1.8 * 10^

24.4 A

is this done correctly?

- physics -
**bobpursley**, Sunday, March 15, 2009 at 4:38pm
Of course not.

440 volts divided by 1800 ohm is not 24 amps.

- physics -
**physics**, Sunday, March 15, 2009 at 4:41pm
is it .24 amps?

- physics -
**bobpursley**, Sunday, March 15, 2009 at 4:56pm
yes, or 240mA

- physics -
**mysterychicken**, Sunday, March 15, 2009 at 4:58pm
which answre would be apropriat for this question

240mA

or .24 amps

- physics -
**bobpursley**, Sunday, March 15, 2009 at 5:01pm
MC, either is correct. The most common usage is probably 240mA, but it is no more correct than .24 A

- physics -
**physics**, Sunday, March 15, 2009 at 5:07pm
ok, thanks

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