Solve the problem. Round your answer to two decimal places.
-According to Ohm's law, the electric current I, in amperes, in a circuit varies directly as the voltage V. When 28 volts are applied, the current is 4 amperes. What is the current when 10 volts are applied?
A) 7 amperes
B) 1.43 amperes
C) 70 amperes
D) 42 amperes

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Quizplus · Accepted Answer

Ohm's law states that I = V/R, where I is the current, V is the voltage, and R is the resistance. Given that 28 volts produce 4 amperes, we can find the resistance (R = V/I = 28/4 = 7 ohms). Using this resistance, for 10 volts, the current I = V/R = 10/7 = 1.43 amperes.

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