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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 105 · 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 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  2. 2.🔋 A robot’s battery holds 8000 mAh and the robot uses 1000 mA. For how many hours can it run?
  3. 3.🔋 A robot’s battery is at 25% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  4. 4.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a solar panel (b) a wind-up key (c) a power cable (d) a coin cell
  5. 5.🔋 A robot’s battery is at 45%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  6. 6.🔋 A robot uses 25% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  7. 7.🔋 A robot’s battery is at 70% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  8. 8.🔋 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%?
  9. 9.🔋 A robot’s battery holds 600 mAh and the robot uses 200 mA. For how many hours can it run?
  10. 10.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  11. 11.🔋 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%?
  12. 12.🔋 A robot’s battery is at 60%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  13. 13.🔋 Many robots on far-away planets get energy from … (a) shop batteries (b) petrol pumps (c) sunlight (solar panels) (d) wind-up keys
  14. 14.🔋 A robot’s battery holds 1200 mAh and the robot uses 200 mA. For how many hours can it run?
  15. 15.🔋 A robot’s battery holds 500 mAh and the robot uses 250 mA. For how many hours can it run?
  16. 16.🔋 A robot’s battery is at 30%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  17. 17.🔋 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%?
  18. 18.🔋 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
  19. 19.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  20. 20.🔋 Battery capacity (how much it holds) is often written in … (a) °C (b) mAh (c) kg (d) km
  21. 21.🔋 What powers most moving robots? (a) a tiny magnet (b) a water tank (c) a candle (d) a rechargeable battery
  22. 22.🔋 A robot’s battery is at 80% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  23. 23.🔋 A robot’s battery is at 25% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  24. 24.🔋 A robot uses 10% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  25. 25.🔋 A robot’s battery is at 80%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  26. 26.🔋 A robot’s battery is at 20% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  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 is at 15%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  29. 29.🔋 A robot uses 5% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  30. 30.🔋 A robot’s battery is at 60% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  31. 31.🔋 A robot’s battery holds 300 mAh and the robot uses 100 mA. For how many hours can it run?
  32. 32.🔋 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%?
  33. 33.🔋 A robot’s battery holds 4000 mAh and the robot uses 500 mA. For how many hours can it run?
  34. 34.🔋 A robot’s battery is at 50%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  35. 35.🔋 A robot’s battery holds 250 mAh and the robot uses 250 mA. For how many hours can it run?
  36. 36.🔋 A robot’s battery holds 2500 mAh and the robot uses 500 mA. For how many hours can it run?
  37. 37.🔋 A robot’s battery is at 40% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  38. 38.🔋 A robot’s battery holds 1400 mAh and the robot uses 200 mA. For how many hours can it run?
  39. 39.🔋 A robot’s battery holds 1000 mAh and the robot uses 1000 mA. For how many hours can it run?
  40. 40.🔋 A robot uses 5% of its battery every 3 minutes. How many minutes does a full battery (100%) last?

Answer key

  1. 12
  2. 8
  3. 30
  4. a power cable
  5. 9
  6. 24
  7. 30
  8. 2
  9. 3
  10. 4.5
  11. 3
  12. 12
  13. sunlight (solar panels)
  14. 6
  15. 2
  16. 3
  17. 2
  18. goes back to its dock
  19. 3
  20. mAh
  21. a rechargeable battery
  22. 10
  23. 150
  24. 10
  25. 8
  26. 160
  27. 7.5
  28. 3
  29. 120
  30. 40
  31. 3
  32. 4
  33. 8
  34. 5
  35. 1
  36. 5
  37. 30
  38. 7
  39. 1
  40. 60

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