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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 76 · 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.🔋 What powers most moving robots? (a) a tiny magnet (b) a water tank (c) a rechargeable battery (d) a candle
  2. 2.🔋 A robot’s battery is at 20% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  3. 3.🔋 A robot uses 25% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  4. 4.🔋 A robot’s battery holds 1250 mAh and the robot uses 250 mA. For how many hours can it run?
  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 25% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  7. 7.🔋 A robot’s battery is at 35% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  8. 8.🔋 Many robots on far-away planets get energy from … (a) wind-up keys (b) sunlight (solar panels) (c) petrol pumps (d) shop batteries
  9. 9.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  10. 10.🔋 A robot’s battery holds 800 mAh and the robot uses 100 mA. For how many hours can it run?
  11. 11.🔋 A robot’s battery is at 15% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  12. 12.🔋 A robot’s battery holds 600 mAh and the robot uses 100 mA. For how many hours can it run?
  13. 13.🔋 A robot’s battery is at 20% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  14. 14.🔋 A robot’s battery is at 75% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  15. 15.🔋 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%?
  16. 16.🔋 A robot’s battery holds 800 mAh and the robot uses 400 mA. For how many hours can it run?
  17. 17.🔋 What should you do with a swollen or damaged robot battery? (a) squeeze it flat (b) give it to an adult (c) throw it in a fire (d) charge it again
  18. 18.🔋 A robot uses 4% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  19. 19.🔋 A robot uses 20% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  20. 20.🔋 A robot’s battery is at 90% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  21. 21.🔋 A robot’s battery is at 50%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  22. 22.🔋 A robot’s battery holds 4000 mAh and the robot uses 1000 mA. For how many hours can it run?
  23. 23.🔋 A robot uses 20% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  24. 24.🔋 A robot uses 5% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  25. 25.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  26. 26.🔋 Battery capacity (how much it holds) is often written in … (a) kg (b) °C (c) km (d) mAh
  27. 27.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  28. 28.🔋 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%?
  29. 29.🔋 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%?
  30. 30.🔋 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%?
  31. 31.🔋 A robot’s battery holds 5000 mAh and the robot uses 1000 mA. For how many hours can it run?
  32. 32.🔋 A robot uses 20% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  33. 33.🔋 A robot’s battery is at 90% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  34. 34.🔋 A robot’s battery holds 1000 mAh and the robot uses 500 mA. For how many hours can it run?
  35. 35.🔋 A robot’s battery is at 25% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  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’s battery is at 40%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  38. 38.🔋 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%?
  39. 39.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a power cable (b) a wind-up key (c) a solar panel (d) a coin cell
  40. 40.🔋 A robot uses 5% of its battery every 1 minute. How many minutes does a full battery (100%) last?

Answer key

  1. a rechargeable battery
  2. 160
  3. 4
  4. 5
  5. 10.5
  6. 16
  7. 130
  8. sunlight (solar panels)
  9. 12
  10. 8
  11. 170
  12. 6
  13. 80
  14. 50
  15. 3
  16. 2
  17. give it to an adult
  18. 25
  19. 25
  20. 10
  21. 10
  22. 4
  23. 10
  24. 40
  25. 3
  26. mAh
  27. 9
  28. 9
  29. 3
  30. 18
  31. 5
  32. 15
  33. 20
  34. 2
  35. 150
  36. 1
  37. 4
  38. 5
  39. a power cable
  40. 20

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