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

question 17

Multiple Choice

Find the constant of proportionality for the stated conditions: $E$ varies jointly with $I$ and $R$ , and when $E$ $= 2,520 , R = 40$ and $\mathrm { I } = 7$ .

• A) \(\quad k = 7\)
• B) \(k = 9\)
• C) \(\quad k = - 9\)
• D) \(\quad k = - 2,520\)
• E) \(\quad k = 2,520\)

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