An electric car is designed to run off a bank of 15-V batteries with total energy storage of 2.1 × 107 J. If the electric motor draws 4 200 W in moving the car at a steady speed of 14 m/s, how far will the car go before it is “out of juice?”
Ohm's law
Ohm’s law is a prominent concept in physics and electronics. It gives the relation between the current and the voltage. It is used to analyze and construct electrical circuits. Ohm's law states that the voltage across a conductor is directly proportional to the current flowing through it.
Path of Least Resistance
In a series of alternate pathways, the direction of least resistance is the actual or metaphorical route that offers the least resistance to forwarding motion by a given individual or body.
An electric car is designed to run off a bank of 15-V batteries with total energy storage of 2.1 × 107 J. If the electric motor draws 4 200 W in moving the car at a steady speed of 14 m/s, how far will the car go before it is “out of juice?”
a. 35 km b. 70 km c. 140 km d. 110 km e. 18 km
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