document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=54740>Question 54740</A>: <I><SPAN STYLE=\"word-break: break-all;\"> w = EI the problem wants a solution for I, and W is wattage, however, it does not state if it is 110 watt or 220 watt, E is for voltaqge and I is for resistance. My question is how do I know what the the resistance is if I don't know what the voltage is, (110/220W)? Can u help?        </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #36960 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=36960\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> :<BR>\n" );
document.write( "w = E*I, where E = voltage and I = current (not resistance)<BR>\n" );
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document.write( "Perhaps they want you to assume 120 volts which is the voltage at a standard outlet.<BR>\n" );
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document.write( "Ohm's law is helpful:<BR>\n" );
document.write( "Resistance:  R = E/I, <BR>\n" );
document.write( "Current: I = E/R,<BR>\n" );
document.write( "Voltage: E = IR<BR>\n" );
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document.write( "More power (in watts) equations:<BR>\n" );
document.write( "P = I^2 * R<BR>\n" );
document.write( "P = E^2/R <BR>\n" );
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