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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 578 · 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.🔋 Many robots on far-away planets get energy from … (a) sunlight (solar panels) (b) petrol pumps (c) wind-up keys (d) shop batteries
  2. 2.🔋 A robot’s battery is at 0% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  3. 3.🔋 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%?
  4. 4.🔋 A robot uses 20% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  5. 5.🔋 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%?
  6. 6.🔋 A robot’s battery holds 200 mAh and the robot uses 100 mA. For how many hours can it run?
  7. 7.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  8. 8.🔋 What powers most moving robots? (a) a water tank (b) a candle (c) a tiny magnet (d) a rechargeable battery
  9. 9.🔋 A robot’s battery is at 10% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  10. 10.🔋 A robot’s battery is at 90% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  11. 11.🔋 A robot’s battery is at 80%. Each lap of the track uses 20%. How many laps can it do before the battery reaches 0%?
  12. 12.🔋 A robot’s battery is at 90%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  13. 13.🔋 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%?
  14. 14.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  15. 15.🔋 A robot’s battery holds 400 mAh and the robot uses 100 mA. For how many hours can it run?
  16. 16.🔋 A robot uses 20% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  17. 17.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  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 50% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  20. 20.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  21. 21.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  22. 22.🔋 A robot’s battery is at 25% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  23. 23.🔋 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%?
  24. 24.🔋 A robot uses 2% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  25. 25.🔋 Battery capacity (how much it holds) is often written in … (a) mAh (b) km (c) kg (d) °C
  26. 26.🔋 A robot’s battery holds 200 mAh and the robot uses 200 mA. For how many hours can it run?
  27. 27.🔋 What does a robot vacuum do when its battery is low? (a) keeps going for ever (b) goes back to its dock (c) explodes (d) turns into a car
  28. 28.🔋 A robot’s battery is at 0% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  29. 29.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  30. 30.🔋 A robot uses 10% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  31. 31.🔋 A robot’s battery is at 50% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  32. 32.🔋 A robot’s battery is at 95% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  33. 33.🔋 A robot’s battery holds 1400 mAh and the robot uses 200 mA. For how many hours can it run?
  34. 34.🔋 A robot’s battery is at 40% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  35. 35.🔋 A robot’s battery holds 6000 mAh and the robot uses 1000 mA. For how many hours can it run?
  36. 36.🔋 A robot’s battery holds 400 mAh and the robot uses 200 mA. For how many hours can it run?
  37. 37.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a coin cell (b) a solar panel (c) a power cable (d) a wind-up key
  38. 38.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  39. 39.🔋 A robot’s battery holds 800 mAh and the robot uses 200 mA. For how many hours can it run?
  40. 40.🔋 A robot’s battery holds 500 mAh and the robot uses 100 mA. For how many hours can it run?

Answer key

  1. sunlight (solar panels)
  2. 100
  3. 13
  4. 20
  5. 4
  6. 2
  7. 10.5
  8. a rechargeable battery
  9. 90
  10. 20
  11. 4
  12. 18
  13. 8
  14. 12
  15. 4
  16. 25
  17. 7.5
  18. 100
  19. 50
  20. 9
  21. 4.5
  22. 150
  23. 2
  24. 100
  25. mAh
  26. 1
  27. goes back to its dock
  28. 40
  29. 6
  30. 50
  31. 100
  32. 10
  33. 7
  34. 60
  35. 6
  36. 2
  37. a power cable
  38. 3
  39. 4
  40. 5

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