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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 23 · 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 holds 400 mAh and the robot uses 100 mA. For how many hours can it run?
  2. 2.🔋 A robot uses 5% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  3. 3.🔋 A robot’s battery is at 80% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  4. 4.🔋 Battery capacity (how much it holds) is often written in … (a) °C (b) kg (c) mAh (d) km
  5. 5.🔋 A robot’s battery holds 2800 mAh and the robot uses 400 mA. For how many hours can it run?
  6. 6.🔋 A robot uses 10% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  7. 7.🔋 Many robots on far-away planets get energy from … (a) wind-up keys (b) shop batteries (c) petrol pumps (d) sunlight (solar panels)
  8. 8.🔋 A robot’s battery is at 80%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  9. 9.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  10. 10.🔋 A robot’s battery holds 2400 mAh and the robot uses 400 mA. For how many hours can it run?
  11. 11.🔋 A robot’s battery holds 200 mAh and the robot uses 200 mA. For how many hours can it run?
  12. 12.🔋 A robot uses 10% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  13. 13.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a solar panel (b) a coin cell (c) a wind-up key (d) a power cable
  14. 14.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  15. 15.🔋 A robot’s battery holds 3200 mAh and the robot uses 400 mA. For how many hours can it run?
  16. 16.🔋 A robot’s battery holds 3000 mAh and the robot uses 500 mA. For how many hours can it run?
  17. 17.🔋 A robot uses 4% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  18. 18.🔋 A robot’s battery is at 95% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  19. 19.🔋 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%?
  20. 20.🔋 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%?
  21. 21.🔋 A robot uses 5% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  22. 22.🔋 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%?
  23. 23.🔋 What powers most moving robots? (a) a candle (b) a water tank (c) a tiny magnet (d) a rechargeable battery
  24. 24.🔋 A robot uses 5% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  25. 25.🔋 A robot’s battery is at 60% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  26. 26.🔋 A robot’s battery holds 7000 mAh and the robot uses 1000 mA. For how many hours can it run?
  27. 27.🔋 A robot’s battery is at 55% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  28. 28.🔋 A robot’s battery holds 6000 mAh and the robot uses 1000 mA. For how many hours can it run?
  29. 29.🔋 A robot’s battery holds 1500 mAh and the robot uses 500 mA. For how many hours can it run?
  30. 30.🔋 A robot’s battery holds 600 mAh and the robot uses 100 mA. For how many hours can it run?
  31. 31.🔋 A robot’s battery holds 200 mAh and the robot uses 100 mA. For how many hours can it run?
  32. 32.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  33. 33.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  34. 34.🔋 A robot uses 5% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  35. 35.🔋 A robot uses 20% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  36. 36.🔋 A robot uses 20% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  37. 37.🔋 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%?
  38. 38.🔋 A robot’s battery is at 15% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  39. 39.🔋 A robot’s battery holds 1000 mAh and the robot uses 250 mA. For how many hours can it run?
  40. 40.🔋 A robot uses 25% of its battery every 2 minutes. How many minutes does a full battery (100%) last?

Answer key

  1. 4
  2. 40
  3. 10
  4. mAh
  5. 7
  6. 20
  7. sunlight (solar panels)
  8. 16
  9. 4.5
  10. 6
  11. 1
  12. 10
  13. a power cable
  14. 10.5
  15. 8
  16. 6
  17. 25
  18. 10
  19. 3
  20. 9
  21. 60
  22. 4
  23. a rechargeable battery
  24. 80
  25. 20
  26. 7
  27. 90
  28. 6
  29. 3
  30. 6
  31. 2
  32. 12
  33. 3
  34. 120
  35. 5
  36. 15
  37. 4
  38. 170
  39. 4
  40. 8

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