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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 248 · 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 20%. 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) mAh (b) °C (c) kg (d) km
  3. 3.🔋 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%?
  4. 4.🔋 A robot’s battery is at 55%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  5. 5.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a power cable (b) a coin cell (c) a wind-up key (d) a solar panel
  6. 6.🔋 A robot’s battery is at 35%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  7. 7.🔋 A robot’s battery is at 80% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  8. 8.🔋 What should you do with a swollen or damaged robot battery? (a) throw it in a fire (b) charge it again (c) squeeze it flat (d) give it to an adult
  9. 9.🔋 A robot’s battery holds 400 mAh and the robot uses 400 mA. For how many hours can it run?
  10. 10.🔋 A robot uses 25% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  11. 11.🔋 A robot’s battery holds 500 mAh and the robot uses 100 mA. For how many hours can it run?
  12. 12.🔋 A robot uses 2% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  13. 13.🔋 A robot’s battery holds 3000 mAh and the robot uses 1000 mA. For how many hours can it run?
  14. 14.🔋 A robot’s battery is at 50% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  15. 15.🔋 A robot uses 2% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  16. 16.🔋 A robot’s battery holds 1200 mAh and the robot uses 400 mA. For how many hours can it run?
  17. 17.🔋 A robot uses 25% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  18. 18.🔋 A robot uses 4% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  19. 19.🔋 A robot uses 25% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  20. 20.🔋 A robot uses 25% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  21. 21.🔋 A robot uses 2% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  22. 22.🔋 A robot’s battery is at 25% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  23. 23.🔋 A robot’s battery holds 1600 mAh and the robot uses 200 mA. For how many hours can it run?
  24. 24.🔋 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%?
  25. 25.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  26. 26.🔋 A robot’s battery is at 40% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  27. 27.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  28. 28.🔋 A robot’s battery holds 800 mAh and the robot uses 100 mA. For how many hours can it run?
  29. 29.🔋 A robot’s battery is at 30% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  30. 30.🔋 A robot’s battery is at 15% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  31. 31.🔋 A robot’s battery is at 80%. Each lap of the track uses 20%. How many laps can it do before the battery reaches 0%?
  32. 32.🔋 A robot uses 10% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  33. 33.🔋 What powers most moving robots? (a) a candle (b) a water tank (c) a tiny magnet (d) a rechargeable battery
  34. 34.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  35. 35.🔋 A robot’s battery is at 60% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  36. 36.🔋 A robot’s battery is at 50% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  37. 37.🔋 A robot uses 20% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  38. 38.🔋 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%?
  39. 39.🔋 A robot’s battery holds 1000 mAh and the robot uses 250 mA. For how many hours can it run?
  40. 40.🔋 A robot uses 10% of its battery every 5 minutes. How many minutes does a full battery (100%) last?

Answer key

  1. 2
  2. mAh
  3. 7
  4. 11
  5. a power cable
  6. 7
  7. 10
  8. give it to an adult
  9. 1
  10. 20
  11. 5
  12. 300
  13. 3
  14. 100
  15. 200
  16. 3
  17. 4
  18. 75
  19. 12
  20. 24
  21. 100
  22. 30
  23. 8
  24. 4
  25. 3
  26. 120
  27. 4.5
  28. 8
  29. 70
  30. 170
  31. 4
  32. 20
  33. a rechargeable battery
  34. 12
  35. 20
  36. 20
  37. 5
  38. 20
  39. 4
  40. 50

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