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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 231 · 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 95%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  2. 2.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  3. 3.🔋 A robot’s battery is at 50% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  4. 4.🔋 A robot’s battery is at 10%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  5. 5.🔋 A robot’s battery is at 0% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  6. 6.🔋 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%?
  7. 7.🔋 Many robots on far-away planets get energy from … (a) petrol pumps (b) shop batteries (c) wind-up keys (d) sunlight (solar panels)
  8. 8.🔋 A robot uses 5% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  9. 9.🔋 A robot’s battery is at 40% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  10. 10.🔋 A robot’s battery holds 250 mAh and the robot uses 250 mA. For how many hours can it run?
  11. 11.🔋 A robot’s battery holds 1000 mAh and the robot uses 250 mA. For how many hours can it run?
  12. 12.🔋 A robot’s battery is at 100%. Each lap of the track uses 20%. How many laps can it do before the battery reaches 0%?
  13. 13.🔋 A robot’s battery is at 0% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  14. 14.🔋 A robot’s battery holds 2000 mAh and the robot uses 1000 mA. For how many hours can it run?
  15. 15.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a coin cell (b) a solar panel (c) a wind-up key (d) a power cable
  16. 16.🔋 A robot’s battery is at 75% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  17. 17.🔋 A robot’s battery holds 1600 mAh and the robot uses 200 mA. For how many hours can it run?
  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’s battery is at 60% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  20. 20.🔋 A robot’s battery holds 4000 mAh and the robot uses 500 mA. For how many hours can it run?
  21. 21.🔋 What does a robot vacuum do when its battery is low? (a) explodes (b) turns into a car (c) goes back to its dock (d) keeps going for ever
  22. 22.🔋 A robot’s battery is at 10% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  23. 23.🔋 A robot’s battery holds 100 mAh and the robot uses 100 mA. For how many hours can it run?
  24. 24.🔋 A robot’s battery holds 700 mAh and the robot uses 100 mA. For how many hours can it run?
  25. 25.🔋 A robot uses 10% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  26. 26.🔋 A robot uses 10% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  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 runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  29. 29.🔋 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%?
  30. 30.🔋 A robot’s battery holds 500 mAh and the robot uses 100 mA. For how many hours can it run?
  31. 31.🔋 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
  32. 32.🔋 A robot uses 4% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  33. 33.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  34. 34.🔋 A robot’s battery is at 60% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  35. 35.🔋 A robot’s battery holds 2000 mAh and the robot uses 250 mA. For how many hours can it run?
  36. 36.🔋 A robot uses 20% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  37. 37.🔋 A robot uses 10% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  38. 38.🔋 A robot’s battery holds 400 mAh and the robot uses 100 mA. For how many hours can it run?
  39. 39.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  40. 40.🔋 Battery capacity (how much it holds) is often written in … (a) km (b) mAh (c) kg (d) °C

Answer key

  1. 19
  2. 3
  3. 20
  4. 2
  5. 100
  6. 4
  7. sunlight (solar panels)
  8. 40
  9. 60
  10. 1
  11. 4
  12. 5
  13. 50
  14. 2
  15. a power cable
  16. 10
  17. 8
  18. 25
  19. 20
  20. 8
  21. goes back to its dock
  22. 180
  23. 1
  24. 7
  25. 50
  26. 60
  27. 4.5
  28. 9
  29. 3
  30. 5
  31. give it to an adult
  32. 100
  33. 12
  34. 80
  35. 8
  36. 10
  37. 10
  38. 4
  39. 7.5
  40. mAh

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