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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 714 · 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 runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  2. 2.🔋 What does a robot vacuum do when its battery is low? (a) explodes (b) turns into a car (c) keeps going for ever (d) goes back to its dock
  3. 3.🔋 A robot’s battery is at 60%. Each lap of the track uses 20%. How many laps can it do before the battery reaches 0%?
  4. 4.🔋 A robot uses 4% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  5. 5.🔋 What powers most moving robots? (a) a rechargeable battery (b) a tiny magnet (c) a water tank (d) a candle
  6. 6.🔋 A robot’s battery is at 90%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  7. 7.🔋 A robot’s battery is at 0% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  8. 8.🔋 A robot’s battery is at 75% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  9. 9.🔋 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%?
  10. 10.🔋 A robot’s battery is at 75% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  11. 11.🔋 A robot uses 2% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  12. 12.🔋 A robot’s battery holds 6000 mAh and the robot uses 1000 mA. For how many hours can it run?
  13. 13.🔋 Many robots on far-away planets get energy from … (a) petrol pumps (b) wind-up keys (c) sunlight (solar panels) (d) shop batteries
  14. 14.🔋 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%?
  15. 15.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  16. 16.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a power cable (b) a coin cell (c) a solar panel (d) a wind-up key
  17. 17.🔋 Battery capacity (how much it holds) is often written in … (a) km (b) mAh (c) °C (d) kg
  18. 18.🔋 A robot uses 4% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  19. 19.🔋 A robot’s battery is at 40% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  20. 20.🔋 A robot uses 4% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  21. 21.🔋 A robot’s battery is at 10% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  22. 22.🔋 A robot’s battery holds 100 mAh and the robot uses 100 mA. For how many hours can it run?
  23. 23.🔋 A robot’s battery holds 1600 mAh and the robot uses 400 mA. For how many hours can it run?
  24. 24.🔋 A robot uses 20% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  25. 25.🔋 A robot’s battery holds 2000 mAh and the robot uses 250 mA. For how many hours can it run?
  26. 26.🔋 A robot’s battery is at 100%. Each lap of the track uses 25%. How many laps can it do before the battery reaches 0%?
  27. 27.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  28. 28.🔋 A robot’s battery holds 3200 mAh and the robot uses 400 mA. For how many hours can it run?
  29. 29.🔋 A robot’s battery holds 2000 mAh and the robot uses 1000 mA. For how many hours can it run?
  30. 30.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  31. 31.🔋 A robot’s battery is at 25% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  32. 32.🔋 A robot’s battery is at 0% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  33. 33.🔋 A robot’s battery holds 3000 mAh and the robot uses 500 mA. For how many hours can it run?
  34. 34.🔋 A robot uses 20% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  35. 35.🔋 A robot’s battery is at 0% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  36. 36.🔋 A robot uses 20% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  37. 37.🔋 A robot’s battery holds 1500 mAh and the robot uses 500 mA. For how many hours can it run?
  38. 38.🔋 A robot’s battery is at 65%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  39. 39.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  40. 40.🔋 A robot’s battery is at 0% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?

Answer key

  1. 3
  2. goes back to its dock
  3. 3
  4. 75
  5. a rechargeable battery
  6. 9
  7. 50
  8. 10
  9. 11
  10. 50
  11. 50
  12. 6
  13. sunlight (solar panels)
  14. 10
  15. 10.5
  16. a power cable
  17. mAh
  18. 100
  19. 30
  20. 25
  21. 90
  22. 1
  23. 4
  24. 15
  25. 8
  26. 4
  27. 6
  28. 8
  29. 2
  30. 7.5
  31. 30
  32. 40
  33. 6
  34. 30
  35. 200
  36. 10
  37. 3
  38. 13
  39. 4.5
  40. 100

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