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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 903 · 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 runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  2. 2.🔋 A robot’s battery holds 1600 mAh and the robot uses 200 mA. For how many hours can it run?
  3. 3.🔋 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%?
  4. 4.🔋 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%?
  5. 5.🔋 Many robots on far-away planets get energy from … (a) shop batteries (b) wind-up keys (c) petrol pumps (d) sunlight (solar panels)
  6. 6.🔋 A robot’s battery is at 75% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  7. 7.🔋 A robot’s battery holds 1250 mAh and the robot uses 250 mA. For how many hours can it run?
  8. 8.🔋 A robot uses 4% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  9. 9.🔋 A robot’s battery holds 2000 mAh and the robot uses 1000 mA. For how many hours can it run?
  10. 10.🔋 A robot’s battery is at 75%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  11. 11.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  12. 12.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  13. 13.🔋 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%?
  14. 14.🔋 Battery capacity (how much it holds) is often written in … (a) km (b) °C (c) mAh (d) kg
  15. 15.🔋 What powers most moving robots? (a) a candle (b) a rechargeable battery (c) a water tank (d) a tiny magnet
  16. 16.🔋 A robot uses 4% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  17. 17.🔋 A robot’s battery holds 200 mAh and the robot uses 200 mA. For how many hours can it run?
  18. 18.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a wind-up key (b) a solar panel (c) a coin cell (d) a power cable
  19. 19.🔋 What should you do with a swollen or damaged robot battery? (a) charge it again (b) squeeze it flat (c) throw it in a fire (d) give it to an adult
  20. 20.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  21. 21.🔋 A robot’s battery is at 10% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  22. 22.🔋 A robot uses 4% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  23. 23.🔋 A robot’s battery holds 3200 mAh and the robot uses 400 mA. For how many hours can it run?
  24. 24.🔋 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%?
  25. 25.🔋 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%?
  26. 26.🔋 A robot’s battery is at 50% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  27. 27.🔋 A robot’s battery holds 1500 mAh and the robot uses 500 mA. For how many hours can it run?
  28. 28.🔋 A robot’s battery holds 2000 mAh and the robot uses 400 mA. For how many hours can it run?
  29. 29.🔋 A robot’s battery is at 90% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  30. 30.🔋 A robot’s battery is at 80% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  31. 31.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  32. 32.🔋 A robot’s battery is at 15%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  33. 33.🔋 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%?
  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’s battery is at 40% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  36. 36.🔋 A robot uses 4% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  37. 37.🔋 A robot’s battery is at 100%. Each lap of the track uses 25%. How many laps can it do before the battery reaches 0%?
  38. 38.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  39. 39.🔋 A robot’s battery holds 1600 mAh and the robot uses 400 mA. For how many hours can it run?
  40. 40.🔋 A robot’s battery holds 2000 mAh and the robot uses 250 mA. For how many hours can it run?

Answer key

  1. 6
  2. 8
  3. 2
  4. 2
  5. sunlight (solar panels)
  6. 10
  7. 5
  8. 150
  9. 2
  10. 15
  11. 10.5
  12. 12
  13. 7
  14. mAh
  15. a rechargeable battery
  16. 75
  17. 1
  18. a power cable
  19. give it to an adult
  20. 9
  21. 90
  22. 50
  23. 8
  24. 11
  25. 3
  26. 20
  27. 3
  28. 5
  29. 10
  30. 10
  31. 7.5
  32. 3
  33. 4
  34. 7
  35. 30
  36. 100
  37. 4
  38. 4.5
  39. 4
  40. 8

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