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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 431 · 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 holds 400 mAh and the robot uses 400 mA. For how many hours can it run?
  2. 2.🔋 A robot’s battery holds 200 mAh and the robot uses 200 mA. For how many hours can it run?
  3. 3.🔋 A robot’s battery is at 10% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  4. 4.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  5. 5.🔋 A robot’s battery is at 85% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  6. 6.🔋 What should you do with a swollen or damaged robot battery? (a) throw it in a fire (b) charge it again (c) give it to an adult (d) squeeze it flat
  7. 7.🔋 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%?
  8. 8.🔋 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%?
  9. 9.🔋 A robot’s battery holds 1000 mAh and the robot uses 1000 mA. For how many hours can it run?
  10. 10.🔋 A robot uses 20% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  11. 11.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a coin cell (b) a wind-up key (c) a solar panel (d) a power cable
  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 5 minutes. How many minutes does a full battery (100%) last?
  14. 14.🔋 Many robots on far-away planets get energy from … (a) shop batteries (b) wind-up keys (c) sunlight (solar panels) (d) petrol pumps
  15. 15.🔋 A robot’s battery holds 200 mAh and the robot uses 100 mA. For how many hours can it run?
  16. 16.🔋 A robot’s battery holds 2000 mAh and the robot uses 250 mA. For how many hours can it run?
  17. 17.🔋 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%?
  18. 18.🔋 A robot’s battery holds 2000 mAh and the robot uses 400 mA. For how many hours can it run?
  19. 19.🔋 A robot uses 10% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  20. 20.🔋 A robot’s battery is at 45% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  21. 21.🔋 A robot’s battery holds 1250 mAh and the robot uses 250 mA. For how many hours can it run?
  22. 22.🔋 A robot’s battery is at 90% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  23. 23.🔋 Battery capacity (how much it holds) is often written in … (a) mAh (b) °C (c) kg (d) km
  24. 24.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  25. 25.🔋 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%?
  26. 26.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  27. 27.🔋 A robot’s battery holds 800 mAh and the robot uses 400 mA. For how many hours can it run?
  28. 28.🔋 What powers most moving robots? (a) a candle (b) a rechargeable battery (c) a water tank (d) a tiny magnet
  29. 29.🔋 A robot uses 25% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  30. 30.🔋 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%?
  31. 31.🔋 A robot’s battery holds 1600 mAh and the robot uses 200 mA. For how many hours can it run?
  32. 32.🔋 A robot’s battery holds 800 mAh and the robot uses 100 mA. For how many hours can it run?
  33. 33.🔋 A robot uses 5% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  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 runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  36. 36.🔋 A robot’s battery holds 4000 mAh and the robot uses 500 mA. For how many hours can it run?
  37. 37.🔋 A robot’s battery holds 500 mAh and the robot uses 100 mA. For how many hours can it run?
  38. 38.🔋 A robot’s battery is at 0% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  39. 39.🔋 A robot’s battery holds 5000 mAh and the robot uses 1000 mA. For how many hours can it run?
  40. 40.🔋 A robot uses 4% of its battery every 3 minutes. How many minutes does a full battery (100%) last?

Answer key

  1. 1
  2. 1
  3. 90
  4. 4.5
  5. 30
  6. give it to an adult
  7. 8
  8. 2
  9. 1
  10. 20
  11. a power cable
  12. 10.5
  13. 100
  14. sunlight (solar panels)
  15. 2
  16. 8
  17. 4
  18. 5
  19. 20
  20. 110
  21. 5
  22. 10
  23. mAh
  24. 9
  25. 2
  26. 6
  27. 2
  28. a rechargeable battery
  29. 16
  30. 6
  31. 8
  32. 8
  33. 80
  34. 12
  35. 3
  36. 8
  37. 5
  38. 50
  39. 5
  40. 75

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