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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 666 · 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 65% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  2. 2.🔋 A robot uses 5% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  3. 3.🔋 A robot uses 10% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  4. 4.🔋 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%?
  5. 5.🔋 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%?
  6. 6.🔋 Battery capacity (how much it holds) is often written in … (a) kg (b) mAh (c) km (d) °C
  7. 7.🔋 A robot’s battery holds 3000 mAh and the robot uses 1000 mA. For how many hours can it run?
  8. 8.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  9. 9.🔋 Many robots on far-away planets get energy from … (a) shop batteries (b) petrol pumps (c) sunlight (solar panels) (d) wind-up keys
  10. 10.🔋 A robot uses 25% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  11. 11.🔋 A robot’s battery holds 700 mAh and the robot uses 100 mA. For how many hours can it run?
  12. 12.🔋 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%?
  13. 13.🔋 A robot uses 4% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  14. 14.🔋 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%?
  15. 15.🔋 What powers most moving robots? (a) a rechargeable battery (b) a water tank (c) a candle (d) a tiny magnet
  16. 16.🔋 A robot’s battery is at 40%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  17. 17.🔋 A robot’s battery holds 2400 mAh and the robot uses 400 mA. For how many hours can it run?
  18. 18.🔋 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%?
  19. 19.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  20. 20.🔋 A robot’s battery holds 200 mAh and the robot uses 100 mA. For how many hours can it run?
  21. 21.🔋 A robot’s battery is at 70%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  22. 22.🔋 A robot’s battery holds 200 mAh and the robot uses 200 mA. For how many hours can it run?
  23. 23.🔋 A robot’s battery holds 2500 mAh and the robot uses 500 mA. For how many hours can it run?
  24. 24.🔋 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%?
  25. 25.🔋 A robot’s battery is at 80% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  26. 26.🔋 A robot’s battery holds 3200 mAh and the robot uses 400 mA. For how many hours can it run?
  27. 27.🔋 A robot’s battery holds 400 mAh and the robot uses 200 mA. For how many hours can it run?
  28. 28.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  29. 29.🔋 A robot uses 20% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  30. 30.🔋 A robot’s battery holds 1750 mAh and the robot uses 250 mA. For how many hours can it run?
  31. 31.🔋 A robot’s battery is at 100%. Each lap of the track uses 20%. How many laps can it do before the battery reaches 0%?
  32. 32.🔋 A robot’s battery is at 70% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  33. 33.🔋 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%?
  34. 34.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  35. 35.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  36. 36.🔋 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%?
  37. 37.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a solar panel (b) a power cable (c) a coin cell (d) a wind-up key
  38. 38.🔋 A robot’s battery holds 4000 mAh and the robot uses 1000 mA. For how many hours can it run?
  39. 39.🔋 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%?
  40. 40.🔋 A robot’s battery holds 400 mAh and the robot uses 400 mA. For how many hours can it run?

Answer key

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

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