Question

The heat H in watts generated by an electric heating element varies directly as the square of the current i in amperes. A heating element produces thermal energy at a rate of 648 watts when the current is 0.9 amperes. What rate of heating in watts will be generated by a current of 1.4 amperes?

Answer 1

\[648=0.9^{2}\times R\]
where R is a constant
\[R=\frac{648}{0.9^{2}}\]
When the current is increased to 1.4 amperes the watts produced will be\[\frac{648}{0.9^{2}}\times 1.4^{2}\]

Answer 2

thatk you

Answer 3

You're welcome :)