document.write( "Question 767698: In physics, Ohm's law says that current through a wire, I, is directly proportional to voltage, V, and inversely proportional to resistance, R: I=V/R. It's also true that resistance is directly proportional to the length of the wire. We have a piece of wire. We pass 12 volts through this wire and measure 100 milliamps of current. If I cut the wire in half and pass 24 volts through it, how many milliamps of current will I measure? \n" ); document.write( "

Algebra.Com's Answer #467801 by josmiceli(19441) $\"\"$ $\"About$

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$\"+R+=+V%2FI+\"$
\n" ); document.write( " $\"+R+=+12%2F.1+\"$ ( .1 A = 100 mA )
\n" ); document.write( " $\"+R+=+120+\"$
\n" ); document.write( "------------
\n" ); document.write( " $\"+R+=+24+%2F+I+\"$
\n" ); document.write( " $\"+60+=+24+%2F+I+\"$ ( R is 1/2 of what it was before )
\n" ); document.write( " $\"+I+=+24%2F60+\"$
\n" ); document.write( " $\"+I+=+.4+\"$ A
\n" ); document.write( " $\"+I+=+400+\"$ mA
\n" ); document.write( " \n" ); document.write( "

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