Guide-linked quiz · Hard Level

How to Plan EV Road Trip Charging Stops With AI Quiz

Tests how speed, cold and elevation drive EV energy use, why charging slows above 80 percent, and how to plan arrival buffers and backup chargers.

Question 1 of 8

Why does driving at 75 mph use noticeably more energy per mile than 60 mph?

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Answers and explanations appear as you take the quiz.

  1. Why does driving at 75 mph use noticeably more energy per mile than 60 mph?
    • Rolling resistance doubles above 70 mph
    • Regenerative braking stops working at high speed
    • Aerodynamic drag grows with the square of speed
    • The battery heater switches on at highway speeds
  2. Why do planners often suggest several shorter charging stops instead of charging to 100 percent?
    • Charging slows as the battery fills, often sharply above about 80 percent
    • Chargers limit every session to 20 minutes
    • Batteries cannot accept charge below 50 percent
    • Short stops are required by charging networks
  3. The guide says cold weather hurts EV trips twice. What are the two effects?
    • Tires deflate and chargers shut down
    • Regeneration increases and range rises
    • Maps become less accurate and speed limits drop
    • Heating draws power, and a cold battery accepts charge more slowly
  4. A station is rated at 350 kW. What does that rating tell you?
    • Every car will charge at 350 kW
    • It is a maximum; actual power depends on the car, battery temperature and power sharing
    • The station charges from 10 to 80 percent in 10 minutes for all cars
    • The charger is guaranteed to be working
  5. Why might navigating to a charger with a phone app instead of the car's built-in system make the stop longer?
    • Phone apps always pick slower chargers
    • Phone apps turn off regenerative braking
    • The car may skip preconditioning the battery
    • Built-in systems unlock a higher charging tier
  6. What arrival buffer does the guide suggest planning for?
    • Roughly 10 to 20 percent
    • Exactly 0 percent to save time
    • At least 50 percent
    • It depends only on the car's color and trim
  7. On a long downhill after a mountain pass, how much of the climbing energy does regenerative braking get back?
    • All of it, plus extra from gravity
    • None of it, since regeneration only works in cities
    • Exactly twice what was used
    • Only part of it
  8. According to the guide, which inputs improve a planner's predictions the most?
    • The number of passengers' phones in the car
    • The correct model and trim, a realistic speed setting and your own measured consumption
    • The brand of the charging app you use
    • The time zone of your destination

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