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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 143 · 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 40%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  2. 2.🔋 Battery capacity (how much it holds) is often written in … (a) kg (b) km (c) mAh (d) °C
  3. 3.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  4. 4.🔋 A robot uses 25% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  5. 5.🔋 A robot’s battery holds 600 mAh and the robot uses 200 mA. For how many hours can it run?
  6. 6.🔋 A robot’s battery is at 20% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  7. 7.🔋 A robot’s battery holds 200 mAh and the robot uses 100 mA. For how many hours can it run?
  8. 8.🔋 A robot uses 10% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  9. 9.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a solar panel (b) a coin cell (c) a power cable (d) a wind-up key
  10. 10.🔋 A robot’s battery is at 30% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  11. 11.🔋 Many robots on far-away planets get energy from … (a) sunlight (solar panels) (b) petrol pumps (c) shop batteries (d) wind-up keys
  12. 12.🔋 A robot’s battery is at 30% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  13. 13.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  14. 14.🔋 A robot’s battery is at 75% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  15. 15.🔋 What does a robot vacuum do when its battery is low? (a) turns into a car (b) explodes (c) keeps going for ever (d) goes back to its dock
  16. 16.🔋 A robot uses 25% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  17. 17.🔋 A robot’s battery is at 50% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  18. 18.🔋 What powers most moving robots? (a) a tiny magnet (b) a water tank (c) a candle (d) a rechargeable battery
  19. 19.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  20. 20.🔋 A robot’s battery is at 80% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  21. 21.🔋 A robot’s battery holds 2000 mAh and the robot uses 1000 mA. For how many hours can it run?
  22. 22.🔋 A robot uses 10% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  23. 23.🔋 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%?
  24. 24.🔋 A robot’s battery is at 45% and charging adds 5% 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 100%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  27. 27.🔋 What should you do with a swollen or damaged robot battery? (a) squeeze it flat (b) charge it again (c) throw it in a fire (d) give it to an adult
  28. 28.🔋 A robot’s battery holds 250 mAh and the robot uses 250 mA. For how many hours can it run?
  29. 29.🔋 A robot’s battery holds 700 mAh and the robot uses 100 mA. For how many hours can it run?
  30. 30.🔋 A robot’s battery holds 400 mAh and the robot uses 400 mA. For how many hours can it run?
  31. 31.🔋 A robot uses 5% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  32. 32.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  33. 33.🔋 A robot’s battery holds 1200 mAh and the robot uses 200 mA. For how many hours can it run?
  34. 34.🔋 A robot’s battery is at 20% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  35. 35.🔋 A robot’s battery is at 20%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  36. 36.🔋 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%?
  37. 37.🔋 A robot’s battery holds 2800 mAh and the robot uses 400 mA. For how many hours can it run?
  38. 38.🔋 A robot uses 4% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  39. 39.🔋 A robot’s battery holds 2000 mAh and the robot uses 250 mA. For how many hours can it run?
  40. 40.🔋 A robot’s battery holds 800 mAh and the robot uses 200 mA. For how many hours can it run?

Answer key

  1. 4
  2. mAh
  3. 12
  4. 24
  5. 3
  6. 80
  7. 2
  8. 10
  9. a power cable
  10. 140
  11. sunlight (solar panels)
  12. 70
  13. 10.5
  14. 10
  15. goes back to its dock
  16. 12
  17. 20
  18. a rechargeable battery
  19. 3
  20. 10
  21. 2
  22. 20
  23. 3
  24. 110
  25. 2
  26. 10
  27. give it to an adult
  28. 1
  29. 7
  30. 1
  31. 80
  32. 7.5
  33. 6
  34. 160
  35. 4
  36. 9
  37. 7
  38. 75
  39. 8
  40. 4

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