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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 319 · 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 arm bolted to a factory floor usually gets its power from … (a) a wind-up key (b) a coin cell (c) a power cable (d) a solar panel
  2. 2.🔋 A robot’s battery is at 80% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  3. 3.🔋 A robot uses 20% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  4. 4.🔋 A robot’s battery is at 80% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  5. 5.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  6. 6.🔋 A robot uses 5% of its battery every 1 minute. 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 70%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  9. 9.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  10. 10.🔋 A robot’s battery holds 500 mAh and the robot uses 250 mA. For how many hours can it run?
  11. 11.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  12. 12.🔋 A robot’s battery is at 70% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  13. 13.🔋 What should you do with a swollen or damaged robot battery? (a) squeeze it flat (b) charge it again (c) give it to an adult (d) throw it in a fire
  14. 14.🔋 A robot’s battery is at 0% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  15. 15.🔋 A robot uses 25% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  16. 16.🔋 A robot’s battery is at 65%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  17. 17.🔋 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%?
  18. 18.🔋 What powers most moving robots? (a) a water tank (b) a candle (c) a tiny magnet (d) a rechargeable battery
  19. 19.🔋 A robot uses 10% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  20. 20.🔋 What does a robot vacuum do when its battery is low? (a) goes back to its dock (b) keeps going for ever (c) explodes (d) turns into a car
  21. 21.🔋 A robot uses 25% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  22. 22.🔋 A robot’s battery holds 100 mAh and the robot uses 100 mA. For how many hours can it run?
  23. 23.🔋 A robot’s battery holds 2400 mAh and the robot uses 400 mA. For how many hours can it run?
  24. 24.🔋 A robot’s battery is at 90%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  25. 25.🔋 A robot uses 2% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  26. 26.🔋 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%?
  27. 27.🔋 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%?
  28. 28.🔋 Battery capacity (how much it holds) is often written in … (a) kg (b) °C (c) km (d) mAh
  29. 29.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  30. 30.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  31. 31.🔋 A robot’s battery holds 400 mAh and the robot uses 400 mA. For how many hours can it run?
  32. 32.🔋 A robot’s battery is at 10% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  33. 33.🔋 A robot’s battery holds 2800 mAh and the robot uses 400 mA. For how many hours can it run?
  34. 34.🔋 A robot uses 4% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  35. 35.🔋 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%?
  36. 36.🔋 A robot’s battery holds 1500 mAh and the robot uses 250 mA. For how many hours can it run?
  37. 37.🔋 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%?
  38. 38.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  39. 39.🔋 A robot uses 10% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  40. 40.🔋 A robot’s battery holds 300 mAh and the robot uses 100 mA. For how many hours can it run?

Answer key

  1. a power cable
  2. 40
  3. 10
  4. 20
  5. 7.5
  6. 20
  7. sunlight (solar panels)
  8. 14
  9. 3
  10. 2
  11. 9
  12. 30
  13. give it to an adult
  14. 40
  15. 20
  16. 13
  17. 3
  18. a rechargeable battery
  19. 40
  20. goes back to its dock
  21. 16
  22. 1
  23. 6
  24. 18
  25. 250
  26. 2
  27. 5
  28. mAh
  29. 12
  30. 10.5
  31. 1
  32. 180
  33. 7
  34. 125
  35. 3
  36. 6
  37. 10
  38. 6
  39. 30
  40. 3

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