document.write( "Question 18999: solve formula for the indicated variable.
\n" ); document.write( "I=E/R+r for R
\n" ); document.write( "
\n" ); document.write( "

Algebra.Com's Answer #9151 by Earlsdon(6294)\"\" \"About 
You can put this solution on YOUR website!
Ohm's law for the amount of current (I) in a cicuit having (R+r) ohms of resistance with an applied voltage of E volts.\r
\n" ); document.write( "\n" ); document.write( "\"I+=+E%2F%28R%2Br%29\" Solve for R, multiply both sides by (R+r).
\n" ); document.write( "\"I%28R%2Br%29+=+E\" Expand (distributive property) the left side.
\n" ); document.write( "\"IR+%2B+Ir+=+E\" Subtract Ir from both sides.
\n" ); document.write( "\"IR+=+E+-+Ir\" Finally divide both sides by I.
\n" ); document.write( "\"R+=+%28E+-+Ir%29%2FI\"
\n" ); document.write( "
\n" );