document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=675361>Question 675361</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The maximum number of volts, E, that can be placed across a resistor is<BR>\n" );
document.write( "given by the formula E = PR, where P is the number of watts of power<BR>\n" );
document.write( "that the resistor can absorb and R is the resistance of the resistor in ohms.<BR>\n" );
document.write( "Find E if P = 12<BR>\n" );
document.write( "watts and R = 72 ohms. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #419806 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=419806\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The maximum number of volts, E, that can be placed across a resistor is<BR>\n" );
document.write( "given by the formula E = PR, where P is the number of watts of power<BR>\n" );
document.write( "that the resistor can absorb and R is the resistance of the resistor in ohms.<BR>\n" );
document.write( "Find E if P = 12<BR>\n" );
document.write( "watts and R = 72 ohms.<BR>\n" );
document.write( "---------------<BR>\n" );
document.write( "Using E = P*R --> 12*72 = 864 volts<BR>\n" );
document.write( "=======================================<BR>\n" );
document.write( "But that formula is not correct.<BR>\n" );
document.write( "Actually P = E^2/R<BR>\n" );
document.write( "--> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=E+=+sqrt%28PR%29+=+sqrt%28864%29 ALIGN=MIDDLE  ALT=\"E+=+sqrt%28PR%29+=+sqrt%28864%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "E =~ 29.4 volts<BR>\n" );
document.write( "-------------------<BR>\n" );
document.write( "Also, resistors don't absorb power, they dissipate it as heat.<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );