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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 585 · 40 questions
TalentJR

Robot tip (Holds ÷ uses): Hours = capacity in mAh ÷ current in mA (2000 mAh ÷ 500 mA = 4 hours). Percent: blocks = 100% ÷ % used per block; time = blocks × minutes per block. Cells in series add up: 4 cells of 1.5 V give 6 V.

NameDateTime takenScore ___ / 40
  1. 1.🔋 A robot’s battery is at 75%. Each lap of the track uses 25%. How many laps can it do before the battery reaches 0%?
  2. 2.🔋 A robot’s battery holds 400 mAh and the robot uses 400 mA. For how many hours can it run?
  3. 3.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  4. 4.🔋 A robot uses 10% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  5. 5.🔋 Battery capacity (how much it holds) is often written in … (a) mAh (b) °C (c) kg (d) km
  6. 6.🔋 A robot uses 2% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  7. 7.🔋 A robot’s battery is at 50%. Each lap of the track uses 25%. How many laps can it do before the battery reaches 0%?
  8. 8.🔋 What powers most moving robots? (a) a rechargeable battery (b) a tiny magnet (c) a candle (d) a water tank
  9. 9.🔋 A robot’s battery is at 60% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  10. 10.🔋 A robot’s battery is at 40%. Each lap of the track uses 20%. How many laps can it do before the battery reaches 0%?
  11. 11.🔋 A robot uses 10% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  12. 12.🔋 A robot’s battery is at 10%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  13. 13.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  14. 14.🔋 A robot’s battery holds 200 mAh and the robot uses 200 mA. For how many hours can it run?
  15. 15.🔋 A robot’s battery is at 20%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  16. 16.🔋 A robot’s battery is at 60% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  17. 17.🔋 What should you do with a swollen or damaged robot battery? (a) give it to an adult (b) throw it in a fire (c) squeeze it flat (d) charge it again
  18. 18.🔋 A robot’s battery is at 25% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  19. 19.🔋 A robot’s battery is at 40% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  20. 20.🔋 Many robots on far-away planets get energy from … (a) sunlight (solar panels) (b) wind-up keys (c) petrol pumps (d) shop batteries
  21. 21.🔋 A robot’s battery holds 750 mAh and the robot uses 250 mA. For how many hours can it run?
  22. 22.🔋 A robot’s battery is at 30% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  23. 23.🔋 A robot’s battery is at 100%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  24. 24.🔋 A robot’s battery is at 20% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  25. 25.🔋 What does a robot vacuum do when its battery is low? (a) explodes (b) keeps going for ever (c) turns into a car (d) goes back to its dock
  26. 26.🔋 A robot uses 2% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  27. 27.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  28. 28.🔋 A robot’s battery holds 4000 mAh and the robot uses 1000 mA. For how many hours can it run?
  29. 29.🔋 A robot’s battery holds 1200 mAh and the robot uses 200 mA. For how many hours can it run?
  30. 30.🔋 A robot’s battery is at 55%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  31. 31.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  32. 32.🔋 A robot’s battery is at 20%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  33. 33.🔋 A robot’s battery is at 35%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  34. 34.🔋 A robot’s battery is at 85%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  35. 35.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a wind-up key (b) a solar panel (c) a power cable (d) a coin cell
  36. 36.🔋 A robot uses 20% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  37. 37.🔋 A robot’s battery is at 40% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  38. 38.🔋 A robot uses 4% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  39. 39.🔋 A robot’s battery is at 75% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  40. 40.🔋 A robot’s battery holds 6000 mAh and the robot uses 1000 mA. For how many hours can it run?

Answer key

  1. 3
  2. 1
  3. 9
  4. 40
  5. mAh
  6. 200
  7. 2
  8. a rechargeable battery
  9. 40
  10. 2
  11. 50
  12. 2
  13. 10.5
  14. 1
  15. 2
  16. 20
  17. give it to an adult
  18. 30
  19. 60
  20. sunlight (solar panels)
  21. 3
  22. 70
  23. 10
  24. 40
  25. goes back to its dock
  26. 100
  27. 7.5
  28. 4
  29. 6
  30. 11
  31. 4.5
  32. 4
  33. 7
  34. 17
  35. a power cable
  36. 25
  37. 120
  38. 25
  39. 10
  40. 6

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