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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 189 · 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 5% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  2. 2.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  3. 3.🔋 A robot’s battery holds 400 mAh and the robot uses 200 mA. For how many hours can it run?
  4. 4.🔋 A robot’s battery holds 2800 mAh and the robot uses 400 mA. For how many hours can it run?
  5. 5.🔋 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%?
  6. 6.🔋 A robot uses 5% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  7. 7.🔋 A robot’s battery holds 5000 mAh and the robot uses 1000 mA. For how many hours can it run?
  8. 8.🔋 Many robots on far-away planets get energy from … (a) petrol pumps (b) wind-up keys (c) sunlight (solar panels) (d) shop batteries
  9. 9.🔋 A robot uses 10% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  10. 10.🔋 A robot uses 25% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  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 uses 2% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  13. 13.🔋 What should you do with a swollen or damaged robot battery? (a) charge it again (b) throw it in a fire (c) squeeze it flat (d) give it to an adult
  14. 14.🔋 A robot uses 4% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  15. 15.🔋 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%?
  16. 16.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  17. 17.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  18. 18.🔋 A robot’s battery holds 500 mAh and the robot uses 500 mA. For how many hours can it run?
  19. 19.🔋 A robot’s battery holds 250 mAh and the robot uses 250 mA. For how many hours can it run?
  20. 20.🔋 A robot uses 20% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  21. 21.🔋 What does a robot vacuum do when its battery is low? (a) turns into a car (b) explodes (c) goes back to its dock (d) keeps going for ever
  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 arm bolted to a factory floor usually gets its power from … (a) a power cable (b) a coin cell (c) a solar panel (d) a wind-up key
  24. 24.🔋 A robot uses 20% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  25. 25.🔋 A robot’s battery holds 800 mAh and the robot uses 200 mA. For how many hours can it run?
  26. 26.🔋 A robot’s battery holds 1200 mAh and the robot uses 200 mA. For how many hours can it run?
  27. 27.🔋 A robot’s battery holds 7000 mAh and the robot uses 1000 mA. For how many hours can it run?
  28. 28.🔋 A robot uses 4% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  29. 29.🔋 Battery capacity (how much it holds) is often written in … (a) km (b) mAh (c) °C (d) kg
  30. 30.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  31. 31.🔋 A robot’s battery holds 1000 mAh and the robot uses 1000 mA. For how many hours can it run?
  32. 32.🔋 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%?
  33. 33.🔋 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%?
  34. 34.🔋 A robot uses 20% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  35. 35.🔋 A robot’s battery is at 45%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  36. 36.🔋 A robot uses 20% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  37. 37.🔋 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%?
  38. 38.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  39. 39.🔋 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%?
  40. 40.🔋 A robot’s battery holds 1200 mAh and the robot uses 400 mA. For how many hours can it run?

Answer key

  1. 120
  2. 6
  3. 2
  4. 7
  5. 9
  6. 60
  7. 5
  8. sunlight (solar panels)
  9. 20
  10. 12
  11. 10.5
  12. 300
  13. give it to an adult
  14. 125
  15. 6
  16. 7.5
  17. 12
  18. 1
  19. 1
  20. 30
  21. goes back to its dock
  22. 30
  23. a power cable
  24. 10
  25. 4
  26. 6
  27. 7
  28. 150
  29. mAh
  30. 3
  31. 1
  32. 4
  33. 3
  34. 20
  35. 9
  36. 25
  37. 2
  38. 9
  39. 2
  40. 3

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