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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 68 · 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.🔋 What does a robot vacuum do when its battery is low? (a) turns into a car (b) explodes (c) goes back to its dock (d) keeps going for ever
  2. 2.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  3. 3.🔋 A robot’s battery is at 15% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  4. 4.🔋 A robot’s battery is at 60% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  5. 5.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a power cable (b) a wind-up key (c) a solar panel (d) a coin cell
  6. 6.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  7. 7.🔋 A robot’s battery is at 50%. Each lap of the track uses 25%. How many laps can it do before the battery reaches 0%?
  8. 8.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  9. 9.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  10. 10.🔋 A robot uses 25% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  11. 11.🔋 A robot’s battery is at 90% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  12. 12.🔋 A robot’s battery holds 500 mAh and the robot uses 500 mA. For how many hours can it run?
  13. 13.🔋 A robot uses 5% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  14. 14.🔋 A robot’s battery is at 0% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  15. 15.🔋 A robot’s battery holds 200 mAh and the robot uses 100 mA. For how many hours can it run?
  16. 16.🔋 A robot uses 25% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  17. 17.🔋 Battery capacity (how much it holds) is often written in … (a) km (b) kg (c) mAh (d) °C
  18. 18.🔋 A robot’s battery holds 400 mAh and the robot uses 200 mA. For how many hours can it run?
  19. 19.🔋 A robot’s battery holds 1500 mAh and the robot uses 250 mA. For how many hours can it run?
  20. 20.🔋 Many robots on far-away planets get energy from … (a) petrol pumps (b) wind-up keys (c) shop batteries (d) sunlight (solar panels)
  21. 21.🔋 A robot uses 4% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  22. 22.🔋 A robot’s battery holds 800 mAh and the robot uses 400 mA. For how many hours can it run?
  23. 23.🔋 A robot’s battery holds 2800 mAh and the robot uses 400 mA. For how many hours can it run?
  24. 24.🔋 A robot’s battery holds 400 mAh and the robot uses 400 mA. For how many hours can it run?
  25. 25.🔋 What powers most moving robots? (a) a tiny magnet (b) a candle (c) a rechargeable battery (d) a water tank
  26. 26.🔋 A robot’s battery holds 4000 mAh and the robot uses 1000 mA. For how many hours can it run?
  27. 27.🔋 A robot’s battery is at 75% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  28. 28.🔋 A robot’s battery holds 200 mAh and the robot uses 200 mA. For how many hours can it run?
  29. 29.🔋 A robot uses 4% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  30. 30.🔋 A robot’s battery holds 800 mAh and the robot uses 100 mA. For how many hours can it run?
  31. 31.🔋 A robot’s battery is at 40%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  32. 32.🔋 A robot’s battery is at 5% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  33. 33.🔋 A robot’s battery is at 40% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  34. 34.🔋 A robot’s battery holds 100 mAh and the robot uses 100 mA. For how many hours can it run?
  35. 35.🔋 What should you do with a swollen or damaged robot battery? (a) squeeze it flat (b) throw it in a fire (c) give it to an adult (d) charge it again
  36. 36.🔋 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%?
  37. 37.🔋 A robot’s battery holds 3000 mAh and the robot uses 1000 mA. For how many hours can it run?
  38. 38.🔋 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%?
  39. 39.🔋 A robot’s battery holds 500 mAh and the robot uses 100 mA. For how many hours can it run?
  40. 40.🔋 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%?

Answer key

  1. goes back to its dock
  2. 12
  3. 170
  4. 80
  5. a power cable
  6. 10.5
  7. 2
  8. 7.5
  9. 6
  10. 16
  11. 20
  12. 1
  13. 80
  14. 100
  15. 2
  16. 4
  17. mAh
  18. 2
  19. 6
  20. sunlight (solar panels)
  21. 125
  22. 2
  23. 7
  24. 1
  25. a rechargeable battery
  26. 4
  27. 10
  28. 1
  29. 100
  30. 8
  31. 8
  32. 190
  33. 30
  34. 1
  35. give it to an adult
  36. 3
  37. 3
  38. 5
  39. 5
  40. 2

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