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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 842 · 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 100%. Each lap of the track uses 20%. How many laps can it do before the battery reaches 0%?
  2. 2.🔋 A robot uses 10% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  3. 3.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  4. 4.🔋 Battery capacity (how much it holds) is often written in … (a) °C (b) mAh (c) kg (d) km
  5. 5.🔋 A robot’s battery holds 200 mAh and the robot uses 100 mA. For how many hours can it run?
  6. 6.🔋 What should you do with a swollen or damaged robot battery? (a) throw it in a fire (b) charge it again (c) give it to an adult (d) squeeze it flat
  7. 7.🔋 A robot’s battery holds 1400 mAh and the robot uses 200 mA. For how many hours can it run?
  8. 8.🔋 A robot’s battery holds 1000 mAh and the robot uses 500 mA. For how many hours can it run?
  9. 9.🔋 A robot uses 5% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  10. 10.🔋 A robot’s battery holds 2000 mAh and the robot uses 500 mA. For how many hours can it run?
  11. 11.🔋 A robot’s battery holds 700 mAh and the robot uses 100 mA. For how many hours can it run?
  12. 12.🔋 A robot’s battery holds 6000 mAh and the robot uses 1000 mA. For how many hours can it run?
  13. 13.🔋 A robot uses 20% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  14. 14.🔋 A robot’s battery holds 1600 mAh and the robot uses 400 mA. For how many hours can it run?
  15. 15.🔋 What does a robot vacuum do when its battery is low? (a) explodes (b) turns into a car (c) keeps going for ever (d) goes back to its dock
  16. 16.🔋 A robot’s battery is at 30% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  17. 17.🔋 A robot’s battery holds 1000 mAh and the robot uses 250 mA. For how many hours can it run?
  18. 18.🔋 Many robots on far-away planets get energy from … (a) sunlight (solar panels) (b) wind-up keys (c) petrol pumps (d) shop batteries
  19. 19.🔋 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%?
  20. 20.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a power cable (b) a coin cell (c) a wind-up key (d) a solar panel
  21. 21.🔋 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%?
  22. 22.🔋 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%?
  23. 23.🔋 A robot’s battery is at 70%. 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 70%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  25. 25.🔋 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%?
  26. 26.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  27. 27.🔋 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%?
  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’s battery is at 40% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  30. 30.🔋 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%?
  31. 31.🔋 A robot’s battery is at 0% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  32. 32.🔋 A robot’s battery holds 1000 mAh and the robot uses 200 mA. For how many hours can it run?
  33. 33.🔋 A robot’s battery holds 2400 mAh and the robot uses 400 mA. For how many hours can it run?
  34. 34.🔋 A robot’s battery is at 100%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  35. 35.🔋 A robot’s battery is at 25% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  36. 36.🔋 A robot’s battery holds 1250 mAh and the robot uses 250 mA. For how many hours can it run?
  37. 37.🔋 A robot’s battery holds 3000 mAh and the robot uses 500 mA. For how many hours can it run?
  38. 38.🔋 A robot’s battery is at 55% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  39. 39.🔋 What powers most moving robots? (a) a rechargeable battery (b) a water tank (c) a tiny magnet (d) a candle
  40. 40.🔋 A robot’s battery holds 500 mAh and the robot uses 500 mA. For how many hours can it run?

Answer key

  1. 5
  2. 60
  3. 12
  4. mAh
  5. 2
  6. give it to an adult
  7. 7
  8. 2
  9. 40
  10. 4
  11. 7
  12. 6
  13. 10
  14. 4
  15. goes back to its dock
  16. 140
  17. 4
  18. sunlight (solar panels)
  19. 15
  20. a power cable
  21. 2
  22. 4
  23. 7
  24. 14
  25. 18
  26. 3
  27. 3
  28. 1
  29. 30
  30. 5
  31. 40
  32. 5
  33. 6
  34. 10
  35. 30
  36. 5
  37. 6
  38. 90
  39. a rechargeable battery
  40. 1

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