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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 265 · 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 is at 75%. Each lap of the track uses 25%. How many laps can it do before the battery reaches 0%?
  2. 2.🔋 What powers most moving robots? (a) a water tank (b) a rechargeable battery (c) a candle (d) a tiny magnet
  3. 3.🔋 A robot’s battery holds 2800 mAh and the robot uses 400 mA. For how many hours can it run?
  4. 4.🔋 A robot’s battery is at 85% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  5. 5.🔋 What should you do with a swollen or damaged robot battery? (a) throw it in a fire (b) give it to an adult (c) squeeze it flat (d) charge it again
  6. 6.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  7. 7.🔋 A robot’s battery is at 20% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  8. 8.🔋 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%?
  9. 9.🔋 A robot’s battery is at 70% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  10. 10.🔋 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%?
  11. 11.🔋 Many robots on far-away planets get energy from … (a) petrol pumps (b) wind-up keys (c) shop batteries (d) sunlight (solar panels)
  12. 12.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  13. 13.🔋 Battery capacity (how much it holds) is often written in … (a) °C (b) kg (c) km (d) mAh
  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’s battery holds 1400 mAh and the robot uses 200 mA. For how many hours can it run?
  16. 16.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a coin cell (b) a solar panel (c) a power cable (d) a wind-up key
  17. 17.🔋 A robot’s battery holds 2400 mAh and the robot uses 400 mA. For how many hours can it run?
  18. 18.🔋 A robot uses 20% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  19. 19.🔋 A robot uses 10% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  20. 20.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  21. 21.🔋 A robot uses 10% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  22. 22.🔋 A robot uses 2% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  23. 23.🔋 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%?
  24. 24.🔋 A robot’s battery is at 80% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  25. 25.🔋 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%?
  26. 26.🔋 A robot’s battery is at 60% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  27. 27.🔋 A robot’s battery holds 1200 mAh and the robot uses 400 mA. For how many hours can it run?
  28. 28.🔋 A robot’s battery is at 60%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  29. 29.🔋 A robot’s battery is at 50% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  30. 30.🔋 A robot uses 5% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  31. 31.🔋 A robot’s battery holds 700 mAh and the robot uses 100 mA. For how many hours can it run?
  32. 32.🔋 A robot’s battery is at 10% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  33. 33.🔋 A robot’s battery holds 2000 mAh and the robot uses 400 mA. For how many hours can it run?
  34. 34.🔋 A robot’s battery holds 800 mAh and the robot uses 400 mA. For how many hours can it run?
  35. 35.🔋 What does a robot vacuum do when its battery is low? (a) turns into a car (b) goes back to its dock (c) explodes (d) keeps going for ever
  36. 36.🔋 A robot’s battery is at 20% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  37. 37.🔋 A robot’s battery is at 95%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  38. 38.🔋 A robot uses 20% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  39. 39.🔋 A robot’s battery holds 600 mAh and the robot uses 100 mA. For how many hours can it run?
  40. 40.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =

Answer key

  1. 3
  2. a rechargeable battery
  3. 7
  4. 30
  5. give it to an adult
  6. 12
  7. 40
  8. 13
  9. 30
  10. 7
  11. sunlight (solar panels)
  12. 10.5
  13. mAh
  14. 9
  15. 7
  16. a power cable
  17. 6
  18. 15
  19. 50
  20. 3
  21. 10
  22. 50
  23. 3
  24. 20
  25. 2
  26. 40
  27. 3
  28. 12
  29. 50
  30. 100
  31. 7
  32. 90
  33. 5
  34. 2
  35. goes back to its dock
  36. 160
  37. 19
  38. 30
  39. 6
  40. 7.5

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