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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 881 · 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 uses 25% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  2. 2.🔋 A robot’s battery holds 4000 mAh and the robot uses 1000 mA. For how many hours can it run?
  3. 3.🔋 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%?
  4. 4.🔋 A robot uses 4% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  5. 5.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  6. 6.🔋 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%?
  7. 7.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  8. 8.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a solar panel (b) a power cable (c) a wind-up key (d) a coin cell
  9. 9.🔋 A robot’s battery is at 0% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  10. 10.🔋 Many robots on far-away planets get energy from … (a) wind-up keys (b) sunlight (solar panels) (c) shop batteries (d) petrol pumps
  11. 11.🔋 A robot’s battery holds 8000 mAh and the robot uses 1000 mA. For how many hours can it run?
  12. 12.🔋 A robot’s battery holds 4000 mAh and the robot uses 500 mA. For how many hours can it run?
  13. 13.🔋 A robot’s battery is at 25% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  14. 14.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  15. 15.🔋 A robot’s battery is at 40% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  16. 16.🔋 A robot uses 25% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  17. 17.🔋 A robot’s battery is at 60%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  18. 18.🔋 A robot’s battery is at 20% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  19. 19.🔋 A robot’s battery holds 1000 mAh and the robot uses 200 mA. For how many hours can it run?
  20. 20.🔋 A robot uses 25% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  21. 21.🔋 A robot’s battery holds 1000 mAh and the robot uses 1000 mA. For how many hours can it run?
  22. 22.🔋 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%?
  23. 23.🔋 Battery capacity (how much it holds) is often written in … (a) °C (b) kg (c) km (d) mAh
  24. 24.🔋 A robot’s battery is at 60% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  25. 25.🔋 A robot’s battery is at 50%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  26. 26.🔋 What should you do with a swollen or damaged robot battery? (a) give it to an adult (b) throw it in a fire (c) charge it again (d) squeeze it flat
  27. 27.🔋 What powers most moving robots? (a) a candle (b) a tiny magnet (c) a rechargeable battery (d) a water tank
  28. 28.🔋 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%?
  29. 29.🔋 A robot’s battery holds 400 mAh and the robot uses 400 mA. For how many hours can it run?
  30. 30.🔋 A robot’s battery is at 30%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  31. 31.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  32. 32.🔋 A robot’s battery is at 80%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  33. 33.🔋 A robot’s battery is at 60%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  34. 34.🔋 A robot’s battery is at 70% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  35. 35.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  36. 36.🔋 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%?
  37. 37.🔋 A robot’s battery is at 45% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  38. 38.🔋 A robot’s battery holds 250 mAh and the robot uses 250 mA. For how many hours can it run?
  39. 39.🔋 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%?
  40. 40.🔋 A robot uses 20% of its battery every 2 minutes. How many minutes does a full battery (100%) last?

Answer key

  1. 12
  2. 4
  3. 3
  4. 100
  5. 12
  6. 13
  7. 4.5
  8. a power cable
  9. 50
  10. sunlight (solar panels)
  11. 8
  12. 8
  13. 30
  14. 10.5
  15. 30
  16. 16
  17. 6
  18. 40
  19. 5
  20. 8
  21. 1
  22. 5
  23. mAh
  24. 20
  25. 5
  26. give it to an adult
  27. a rechargeable battery
  28. 7
  29. 1
  30. 6
  31. 6
  32. 8
  33. 12
  34. 60
  35. 7.5
  36. 2
  37. 110
  38. 1
  39. 4
  40. 10

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