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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 11 · 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.🔋 Battery capacity (how much it holds) is often written in … (a) km (b) mAh (c) kg (d) °C
  2. 2.🔋 A robot uses 5% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  3. 3.🔋 A robot’s battery is at 0% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  4. 4.🔋 A robot uses 2% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  5. 5.🔋 A robot uses 10% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  6. 6.🔋 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%?
  7. 7.🔋 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
  8. 8.🔋 A robot’s battery holds 500 mAh and the robot uses 500 mA. For how many hours can it run?
  9. 9.🔋 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
  10. 10.🔋 A robot uses 25% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  11. 11.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  12. 12.🔋 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%?
  13. 13.🔋 A robot’s battery holds 1250 mAh and the robot uses 250 mA. For how many hours can it run?
  14. 14.🔋 A robot’s battery holds 100 mAh and the robot uses 100 mA. For how many hours can it run?
  15. 15.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  16. 16.🔋 What powers most moving robots? (a) a candle (b) a rechargeable battery (c) a water tank (d) a tiny magnet
  17. 17.🔋 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%?
  18. 18.🔋 A robot’s battery is at 20% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  19. 19.🔋 A robot uses 20% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  20. 20.🔋 A robot’s battery is at 75% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  21. 21.🔋 A robot’s battery holds 1600 mAh and the robot uses 400 mA. For how many hours can it run?
  22. 22.🔋 A robot’s battery holds 2000 mAh and the robot uses 500 mA. For how many hours can it run?
  23. 23.🔋 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%?
  24. 24.🔋 A robot’s battery holds 2400 mAh and the robot uses 400 mA. For how many hours can it run?
  25. 25.🔋 A robot’s battery is at 60%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  26. 26.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  27. 27.🔋 A robot uses 4% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  28. 28.🔋 A robot uses 10% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  29. 29.🔋 A robot’s battery holds 600 mAh and the robot uses 200 mA. For how many hours can it run?
  30. 30.🔋 A robot’s battery holds 6000 mAh and the robot uses 1000 mA. For how many hours can it run?
  31. 31.🔋 A robot’s battery holds 1000 mAh and the robot uses 500 mA. For how many hours can it run?
  32. 32.🔋 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%?
  33. 33.🔋 A robot’s battery is at 60% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  34. 34.🔋 Many robots on far-away planets get energy from … (a) shop batteries (b) sunlight (solar panels) (c) petrol pumps (d) wind-up keys
  35. 35.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  36. 36.🔋 A robot uses 25% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  37. 37.🔋 A robot uses 5% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  38. 38.🔋 A robot’s battery is at 35% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  39. 39.🔋 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%?
  40. 40.🔋 A robot’s battery holds 1200 mAh and the robot uses 200 mA. For how many hours can it run?

Answer key

  1. mAh
  2. 80
  3. 50
  4. 150
  5. 40
  6. 3
  7. goes back to its dock
  8. 1
  9. a power cable
  10. 4
  11. 7.5
  12. 4
  13. 5
  14. 1
  15. 9
  16. a rechargeable battery
  17. 2
  18. 160
  19. 30
  20. 10
  21. 4
  22. 4
  23. 3
  24. 6
  25. 6
  26. 6
  27. 125
  28. 10
  29. 3
  30. 6
  31. 2
  32. 4
  33. 20
  34. sunlight (solar panels)
  35. 3
  36. 20
  37. 100
  38. 130
  39. 3
  40. 6

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