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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 232 · 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 200 mAh and the robot uses 100 mA. For how many hours can it run?
  2. 2.🔋 A robot’s battery is at 85% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  3. 3.🔋 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%?
  4. 4.🔋 A robot uses 2% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  5. 5.🔋 A robot’s battery holds 4000 mAh and the robot uses 500 mA. For how many hours can it run?
  6. 6.🔋 What does a robot vacuum do when its battery is low? (a) keeps going for ever (b) goes back to its dock (c) turns into a car (d) explodes
  7. 7.🔋 What should you do with a swollen or damaged robot battery? (a) charge it again (b) squeeze it flat (c) give it to an adult (d) throw it in a fire
  8. 8.🔋 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%?
  9. 9.🔋 A robot’s battery is at 75%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  10. 10.🔋 A robot’s battery is at 50% and charging adds 25% 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.🔋 Many robots on far-away planets get energy from … (a) sunlight (solar panels) (b) petrol pumps (c) wind-up keys (d) shop batteries
  13. 13.🔋 A robot’s battery holds 8000 mAh and the robot uses 1000 mA. For how many hours can it run?
  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 600 mAh and the robot uses 200 mA. For how many hours can it run?
  16. 16.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  17. 17.🔋 A robot’s battery is at 50% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  18. 18.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  19. 19.🔋 A robot’s battery is at 0% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  20. 20.🔋 A robot’s battery holds 6000 mAh and the robot uses 1000 mA. For how many hours can it run?
  21. 21.🔋 Battery capacity (how much it holds) is often written in … (a) kg (b) °C (c) mAh (d) km
  22. 22.🔋 A robot uses 25% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  23. 23.🔋 A robot’s battery is at 40% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  24. 24.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  25. 25.🔋 A robot’s battery is at 40% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  26. 26.🔋 A robot’s battery holds 1250 mAh and the robot uses 250 mA. For how many hours can it run?
  27. 27.🔋 What powers most moving robots? (a) a tiny magnet (b) a candle (c) a rechargeable battery (d) a water tank
  28. 28.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  29. 29.🔋 A robot’s battery is at 75% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  30. 30.🔋 A robot uses 10% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  31. 31.🔋 A robot’s battery holds 1500 mAh and the robot uses 500 mA. For how many hours can it run?
  32. 32.🔋 A robot’s battery is at 20% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  33. 33.🔋 A robot’s battery holds 300 mAh and the robot uses 100 mA. For how many hours can it run?
  34. 34.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  35. 35.🔋 A robot’s battery is at 60% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  36. 36.🔋 A robot’s battery holds 500 mAh and the robot uses 250 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 solar panel (b) a power cable (c) a wind-up key (d) a coin cell
  38. 38.🔋 A robot’s battery holds 3000 mAh and the robot uses 500 mA. For how many hours can it run?
  39. 39.🔋 A robot’s battery holds 3500 mAh and the robot uses 500 mA. For how many hours can it run?
  40. 40.🔋 A robot’s battery is at 50%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?

Answer key

  1. 2
  2. 30
  3. 2
  4. 250
  5. 8
  6. goes back to its dock
  7. give it to an adult
  8. 3
  9. 15
  10. 20
  11. 4
  12. sunlight (solar panels)
  13. 8
  14. 12
  15. 3
  16. 9
  17. 100
  18. 6
  19. 100
  20. 6
  21. mAh
  22. 12
  23. 60
  24. 4.5
  25. 120
  26. 5
  27. a rechargeable battery
  28. 3
  29. 10
  30. 10
  31. 3
  32. 160
  33. 3
  34. 10.5
  35. 20
  36. 2
  37. a power cable
  38. 6
  39. 7
  40. 10

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