Find the constant of proportionality for the stated conditions: $E$ varies jointly with $I$ and $R$, and when $E$ $= 500 , R = 50$ and $\mathrm { I } = 2$.
A) $\quad k = - 5$
B) $\quad k = - 500$
C) $\quad k = 500$
D) $\quad k = 2$
E) $\quad k = 5$

Question

Quizplus · Accepted Answer

The constant of proportionality $k$ in a joint variation where $E$ varies jointly with $I$ and $R$ is found using the formula $E = kIR$. Substituting the given values $E = 500$, $I = 2$, and $R = 50$ into the equation gives $500 = k \times 2 \times 50$. Solving for $k$ gives $k = 500 / (2 \times 50) = 5$.

Find the Constant of Proportionality for the Stated Conditions EEE Varies Jointly With

Find the Constant of Proportionality for the Stated Conditions $E$ Varies Jointly With