Final answer:
Using Ohm's law, the current flowing through the toy car is calculated to be 0.15 amperes when connected to a 3-volt battery with a resistance of 20 ohms.
Step-by-step explanation:
The question at hand involves calculating the current flowing through a toy car when it is connected to a 3-volt battery and has a resistance of 20 ohms.
To find the current (I), Ohm's law is used, which states that current equals voltage (V) divided by resistance (R), or I = V/R. Plugging in the values from the question, you get I = 3V / 20Ω, which results in a current of 0.15 amperes (A).