document.write( "Question 206773This question is from textbook Algebra and Trigonometry with Analytic Geometry
\n" ); document.write( ": In electrical theory, Ohm's law states that I=V/ R, where I is the current in amperes, V is the electromotive force in volts, and R is the resistance in ohms. In a certain circuit V= 110 and R= 50. If V and R are to be changed by the same numerical amount, what change in them will cause I to double? \n" ); document.write( "

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In electrical theory, Ohm's law states that I=V/ R, where I is the current in amperes, V is the electromotive force in volts, and R is the resistance in ohms. In a certain circuit V= 110 and R= 50. If V and R are to be changed by the same numerical amount, what change in them will cause I to double?
\n" ); document.write( "------------
\n" ); document.write( "I = V/R
\n" ); document.write( "2I= (V+x)/(R+x)
\n" ); document.write( "2V/R = (V+x)/(R+x)
\n" ); document.write( "2*110/50 = (110+x)/(50+x)
\n" ); document.write( "220*(50+x) = 50*(110+x)
\n" ); document.write( "11000 + 220x = 5500+ 50x
\n" ); document.write( "5500 = -170x
\n" ); document.write( "x = -550/17
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