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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 879 · 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 50% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  2. 2.🔋 A robot’s battery holds 1000 mAh and the robot uses 250 mA. For how many hours can it run?
  3. 3.🔋 A robot’s battery holds 2400 mAh and the robot uses 400 mA. For how many hours can it run?
  4. 4.🔋 What does a robot vacuum do when its battery is low? (a) explodes (b) keeps going for ever (c) turns into a car (d) goes back to its dock
  5. 5.🔋 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%?
  6. 6.🔋 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%?
  7. 7.🔋 A robot’s battery is at 75% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  8. 8.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  9. 9.🔋 Battery capacity (how much it holds) is often written in … (a) mAh (b) km (c) kg (d) °C
  10. 10.🔋 A robot’s battery is at 0% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  11. 11.🔋 A robot’s battery is at 40% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  12. 12.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  13. 13.🔋 A robot uses 5% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  14. 14.🔋 Many robots on far-away planets get energy from … (a) petrol pumps (b) shop batteries (c) sunlight (solar panels) (d) wind-up keys
  15. 15.🔋 A robot uses 4% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  16. 16.🔋 A robot’s battery holds 1400 mAh and the robot uses 200 mA. For how many hours can it run?
  17. 17.🔋 What should you do with a swollen or damaged robot battery? (a) give it to an adult (b) charge it again (c) squeeze it flat (d) throw it in a fire
  18. 18.🔋 A robot’s battery holds 2000 mAh and the robot uses 1000 mA. For how many hours can it run?
  19. 19.🔋 A robot uses 2% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  20. 20.🔋 What powers most moving robots? (a) a tiny magnet (b) a rechargeable battery (c) a water tank (d) a candle
  21. 21.🔋 A robot uses 10% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  22. 22.🔋 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%?
  23. 23.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a wind-up key (b) a coin cell (c) a solar panel (d) a power cable
  24. 24.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  25. 25.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  26. 26.🔋 A robot’s battery is at 55% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  27. 27.🔋 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%?
  28. 28.🔋 A robot’s battery holds 500 mAh and the robot uses 500 mA. For how many hours can it run?
  29. 29.🔋 A robot uses 25% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  30. 30.🔋 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%?
  31. 31.🔋 A robot’s battery holds 400 mAh and the robot uses 200 mA. For how many hours can it run?
  32. 32.🔋 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%?
  33. 33.🔋 A robot uses 10% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  34. 34.🔋 A robot’s battery holds 6000 mAh and the robot uses 1000 mA. For how many hours can it run?
  35. 35.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  36. 36.🔋 A robot’s battery holds 200 mAh and the robot uses 200 mA. For how many hours can it run?
  37. 37.🔋 A robot uses 4% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  38. 38.🔋 A robot’s battery is at 20% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  39. 39.🔋 A robot’s battery holds 1000 mAh and the robot uses 500 mA. For how many hours can it run?
  40. 40.🔋 A robot’s battery is at 20% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?

Answer key

  1. 50
  2. 4
  3. 6
  4. goes back to its dock
  5. 4
  6. 3
  7. 10
  8. 9
  9. mAh
  10. 40
  11. 60
  12. 10.5
  13. 40
  14. sunlight (solar panels)
  15. 25
  16. 7
  17. give it to an adult
  18. 2
  19. 50
  20. a rechargeable battery
  21. 60
  22. 4
  23. a power cable
  24. 3
  25. 7.5
  26. 90
  27. 3
  28. 1
  29. 12
  30. 2
  31. 2
  32. 2
  33. 30
  34. 6
  35. 12
  36. 1
  37. 150
  38. 40
  39. 2
  40. 160

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