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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 506 · 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 arm bolted to a factory floor usually gets its power from … (a) a coin cell (b) a power cable (c) a solar panel (d) a wind-up key
  2. 2.🔋 A robot’s battery is at 90% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  3. 3.🔋 A robot’s battery is at 0% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  4. 4.🔋 A robot’s battery is at 70% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  5. 5.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  6. 6.🔋 A robot uses 5% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  7. 7.🔋 A robot’s battery is at 10%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  8. 8.🔋 A robot’s battery holds 400 mAh and the robot uses 400 mA. For how many hours can it run?
  9. 9.🔋 A robot’s battery holds 100 mAh and the robot uses 100 mA. For how many hours can it run?
  10. 10.🔋 Battery capacity (how much it holds) is often written in … (a) °C (b) mAh (c) kg (d) km
  11. 11.🔋 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%?
  12. 12.🔋 A robot uses 25% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  13. 13.🔋 A robot’s battery is at 0% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  14. 14.🔋 A robot’s battery holds 1200 mAh and the robot uses 400 mA. For how many hours can it run?
  15. 15.🔋 A robot’s battery is at 20% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  16. 16.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  17. 17.🔋 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%?
  18. 18.🔋 What powers most moving robots? (a) a candle (b) a tiny magnet (c) a water tank (d) a rechargeable battery
  19. 19.🔋 A robot’s battery is at 40% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  20. 20.🔋 A robot uses 2% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  21. 21.🔋 A robot’s battery holds 1600 mAh and the robot uses 400 mA. For how many hours can it run?
  22. 22.🔋 A robot’s battery is at 80% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  23. 23.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  24. 24.🔋 A robot’s battery holds 200 mAh and the robot uses 200 mA. For how many hours can it run?
  25. 25.🔋 A robot’s battery is at 40% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  26. 26.🔋 What should you do with a swollen or damaged robot battery? (a) squeeze it flat (b) charge it again (c) give it to an adult (d) throw it in a fire
  27. 27.🔋 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%?
  28. 28.🔋 A robot’s battery holds 3500 mAh and the robot uses 500 mA. For how many hours can it run?
  29. 29.🔋 A robot uses 4% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  30. 30.🔋 A robot’s battery holds 1000 mAh and the robot uses 500 mA. For how many hours can it run?
  31. 31.🔋 A robot uses 2% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  32. 32.🔋 A robot’s battery holds 800 mAh and the robot uses 400 mA. For how many hours can it run?
  33. 33.🔋 Many robots on far-away planets get energy from … (a) sunlight (solar panels) (b) petrol pumps (c) shop batteries (d) wind-up keys
  34. 34.🔋 A robot’s battery holds 2800 mAh and the robot uses 400 mA. For how many hours can it run?
  35. 35.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  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 is at 100%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  38. 38.🔋 A robot uses 10% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  39. 39.🔋 A robot’s battery holds 400 mAh and the robot uses 100 mA. For how many hours can it run?
  40. 40.🔋 A robot uses 4% of its battery every 4 minutes. How many minutes does a full battery (100%) last?

Answer key

  1. a power cable
  2. 20
  3. 100
  4. 60
  5. 10.5
  6. 80
  7. 2
  8. 1
  9. 1
  10. mAh
  11. 9
  12. 4
  13. 50
  14. 3
  15. 80
  16. 3
  17. 13
  18. a rechargeable battery
  19. 30
  20. 300
  21. 4
  22. 10
  23. 4.5
  24. 1
  25. 60
  26. give it to an adult
  27. 2
  28. 7
  29. 50
  30. 2
  31. 150
  32. 2
  33. sunlight (solar panels)
  34. 7
  35. 6
  36. 3
  37. 20
  38. 20
  39. 4
  40. 100

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