Solve.
-According to Ohm's law, the electric current I, in amperes, in a circuit varies directly as the voltage V. When 18 volts are applied, the current is 4 amperes. What is the current when 13 volts are applied?
A) 4.5 amperes
B) 35 amperes
C) 2.89 amperes
D) 58.5 amperes

Question

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 18 volts produce 4 amperes, we can find the resistance (R = V/I = 18/4 = 4.5 ohms). Using this resistance, the current for 13 volts is I = V/R = 13/4.5 ≈ 2.89 amperes.

Solve. -According to Ohm's Law, the Electric Current I, in Amperes