Final answer:
The electrical current in a simple circuit varies directly as the voltage. Using the given values, we can find the constant of proportionality and determine the current when the voltage is 25 V.
Step-by-step explanation:
According to the given information, the electrical current in a simple circuit varies directly as the voltage. This means that if the voltage increases, the current will also increase proportionally. Let's use the given values to find the constant of proportionality.
From the given data, when the current (I) is 5 A and the voltage (V) is 15 V, we can set up the equation I = kV, where k is the constant of proportionality.
Using the values given, we have 5 = k(15). Solving for k, we find k = 1/3.
Now that we have the value of k, we can find the current when the voltage is 25 V. Substituting the values into the equation, we have I = (1/3)(25) = 8.33 A.