Solve the Variation Problem

question 55

Multiple Choice

Solve the variation problem.
-The voltage across a resistor is jointly proportional to the resistance of the resistor and the current flowing through the resistor. If the voltage across a resistor is 72 volts for a resistor whose resistance is 9 ohms and when the current flowing through the resistor is 8 amperes, find the voltage across a resistor whose resistance is 7 ohms when the current flowing through the resistor is 6 amperes.

• A)54 volts
• B)42 volts
• C)56 volts
• D)48 volts

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