Answer: The correct answer is 3 V.
Step-by-step explanation:
The mathematical expression form Ohm's law is as follows;
V=IR
Here, V is the potential, R is the resistance and I is the current.
It is given in the problem that a toy car has a 1.5-A current, and its resistance is 2 .
Put I= 1.5 A and R= 2 ohm in the above expression.
V=(1.5)(2)
V=3 V
Therefore, the voltage required by the car is 3 V.