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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 308 · 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 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  2. 2.🔋 A robot’s battery is at 0% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  3. 3.🔋 What should you do with a swollen or damaged robot battery? (a) throw it in a fire (b) squeeze it flat (c) give it to an adult (d) charge it again
  4. 4.🔋 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%?
  5. 5.🔋 A robot uses 25% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  6. 6.🔋 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
  7. 7.🔋 Battery capacity (how much it holds) is often written in … (a) °C (b) km (c) kg (d) mAh
  8. 8.🔋 A robot’s battery is at 5% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  9. 9.🔋 Many robots on far-away planets get energy from … (a) shop batteries (b) sunlight (solar panels) (c) wind-up keys (d) petrol pumps
  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.🔋 A robot uses 10% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  13. 13.🔋 A robot’s battery is at 20% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  14. 14.🔋 A robot’s battery is at 25%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  15. 15.🔋 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%?
  16. 16.🔋 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%?
  17. 17.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  18. 18.🔋 A robot’s battery holds 2000 mAh and the robot uses 500 mA. For how many hours can it run?
  19. 19.🔋 A robot uses 25% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  20. 20.🔋 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%?
  21. 21.🔋 A robot uses 4% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  22. 22.🔋 A robot’s battery is at 10% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  23. 23.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  24. 24.🔋 A robot uses 25% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  25. 25.🔋 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%?
  26. 26.🔋 What does a robot vacuum do when its battery is low? (a) goes back to its dock (b) turns into a car (c) explodes (d) keeps going for ever
  27. 27.🔋 What powers most moving robots? (a) a tiny magnet (b) a rechargeable battery (c) a candle (d) a water tank
  28. 28.🔋 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%?
  29. 29.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  30. 30.🔋 A robot’s battery holds 200 mAh and the robot uses 200 mA. For how many hours can it run?
  31. 31.🔋 A robot’s battery is at 85% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  32. 32.🔋 A robot’s battery holds 7000 mAh and the robot uses 1000 mA. For how many hours can it run?
  33. 33.🔋 A robot’s battery is at 35%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  34. 34.🔋 A robot’s battery is at 25% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  35. 35.🔋 A robot uses 4% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  36. 36.🔋 A robot uses 20% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  37. 37.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  38. 38.🔋 A robot uses 5% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  39. 39.🔋 A robot uses 5% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  40. 40.🔋 A robot’s battery is at 75% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?

Answer key

  1. 12
  2. 200
  3. give it to an adult
  4. 4
  5. 24
  6. a power cable
  7. mAh
  8. 190
  9. sunlight (solar panels)
  10. 20
  11. 4
  12. 50
  13. 40
  14. 5
  15. 13
  16. 3
  17. 10.5
  18. 4
  19. 20
  20. 17
  21. 50
  22. 90
  23. 4.5
  24. 4
  25. 9
  26. goes back to its dock
  27. a rechargeable battery
  28. 4
  29. 7.5
  30. 1
  31. 30
  32. 7
  33. 7
  34. 30
  35. 150
  36. 30
  37. 9
  38. 80
  39. 40
  40. 50

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