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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 417 · 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.🔋 A robot uses 5% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  3. 3.🔋 A robot’s battery is at 70%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  4. 4.🔋 Battery capacity (how much it holds) is often written in … (a) km (b) °C (c) kg (d) mAh
  5. 5.🔋 A robot uses 20% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  6. 6.🔋 A robot’s battery holds 400 mAh and the robot uses 400 mA. For how many hours can it run?
  7. 7.🔋 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%?
  8. 8.🔋 A robot’s battery holds 1000 mAh and the robot uses 200 mA. For how many hours can it run?
  9. 9.🔋 A robot’s battery holds 250 mAh and the robot uses 250 mA. For how many hours can it run?
  10. 10.🔋 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%?
  11. 11.🔋 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%?
  12. 12.🔋 A robot’s battery is at 75% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  13. 13.🔋 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%?
  14. 14.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  15. 15.🔋 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
  16. 16.🔋 A robot’s battery is at 80% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  17. 17.🔋 A robot uses 2% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  18. 18.🔋 A robot’s battery holds 600 mAh and the robot uses 200 mA. For how many hours can it run?
  19. 19.🔋 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%?
  20. 20.🔋 A robot’s battery holds 1750 mAh and the robot uses 250 mA. For how many hours can it run?
  21. 21.🔋 A robot’s battery holds 1000 mAh and the robot uses 500 mA. For how many hours can it run?
  22. 22.🔋 A robot’s battery is at 0% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  23. 23.🔋 What powers most moving robots? (a) a candle (b) a tiny magnet (c) a rechargeable battery (d) a water tank
  24. 24.🔋 A robot uses 2% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  25. 25.🔋 A robot’s battery is at 0% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  26. 26.🔋 A robot uses 10% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  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 is at 40% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  29. 29.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  30. 30.🔋 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%?
  31. 31.🔋 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%?
  32. 32.🔋 A robot’s battery is at 80% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  33. 33.🔋 Many robots on far-away planets get energy from … (a) sunlight (solar panels) (b) shop batteries (c) petrol pumps (d) wind-up keys
  34. 34.🔋 A robot’s battery holds 1200 mAh and the robot uses 200 mA. For how many hours can it run?
  35. 35.🔋 A robot uses 25% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  36. 36.🔋 A robot’s battery holds 7000 mAh and the robot uses 1000 mA. For how many hours can it run?
  37. 37.🔋 A robot’s battery holds 4000 mAh and the robot uses 500 mA. For how many hours can it run?
  38. 38.🔋 A robot’s battery holds 1000 mAh and the robot uses 250 mA. For how many hours can it run?
  39. 39.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  40. 40.🔋 A robot’s battery holds 1400 mAh and the robot uses 200 mA. For how many hours can it run?

Answer key

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

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