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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 503 · 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 75%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  2. 2.🔋 What should you do with a swollen or damaged robot battery? (a) throw it in a fire (b) give it to an adult (c) squeeze it flat (d) charge it again
  3. 3.🔋 Many robots on far-away planets get energy from … (a) wind-up keys (b) petrol pumps (c) shop batteries (d) sunlight (solar panels)
  4. 4.🔋 A robot’s battery is at 75% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  5. 5.🔋 A robot uses 20% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  6. 6.🔋 A robot’s battery holds 700 mAh and the robot uses 100 mA. For how many hours can it run?
  7. 7.🔋 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%?
  8. 8.🔋 A robot uses 2% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  9. 9.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  10. 10.🔋 A robot’s battery holds 1000 mAh and the robot uses 500 mA. For how many hours can it run?
  11. 11.🔋 A robot’s battery holds 300 mAh and the robot uses 100 mA. For how many hours can it run?
  12. 12.🔋 A robot’s battery is at 80% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  13. 13.🔋 A robot’s battery is at 65%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  14. 14.🔋 What does a robot vacuum do when its battery is low? (a) turns into a car (b) goes back to its dock (c) explodes (d) keeps going for ever
  15. 15.🔋 A robot’s battery is at 30%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  16. 16.🔋 A robot’s battery holds 200 mAh and the robot uses 200 mA. For how many hours can it run?
  17. 17.🔋 A robot’s battery is at 25% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  18. 18.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  19. 19.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a wind-up key (b) a coin cell (c) a solar panel (d) a power cable
  20. 20.🔋 A robot uses 20% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  21. 21.🔋 A robot’s battery holds 1400 mAh and the robot uses 200 mA. For how many hours can it run?
  22. 22.🔋 A robot’s battery is at 25%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  23. 23.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  24. 24.🔋 A robot’s battery holds 1000 mAh and the robot uses 200 mA. For how many hours can it run?
  25. 25.🔋 A robot’s battery is at 20% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  26. 26.🔋 Battery capacity (how much it holds) is often written in … (a) °C (b) kg (c) mAh (d) km
  27. 27.🔋 A robot uses 5% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  28. 28.🔋 A robot uses 10% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  29. 29.🔋 A robot uses 4% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  30. 30.🔋 A robot uses 5% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  31. 31.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  32. 32.🔋 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%?
  33. 33.🔋 A robot uses 20% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  34. 34.🔋 A robot’s battery holds 250 mAh and the robot uses 250 mA. For how many hours can it run?
  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 is at 80%. Each lap of the track uses 20%. How many laps can it do before the battery reaches 0%?
  37. 37.🔋 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%?
  38. 38.🔋 A robot’s battery holds 2800 mAh and the robot uses 400 mA. For how many hours can it run?
  39. 39.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  40. 40.🔋 A robot’s battery holds 1250 mAh and the robot uses 250 mA. For how many hours can it run?

Answer key

  1. 15
  2. give it to an adult
  3. sunlight (solar panels)
  4. 10
  5. 20
  6. 7
  7. 4
  8. 250
  9. 4.5
  10. 2
  11. 3
  12. 20
  13. 13
  14. goes back to its dock
  15. 3
  16. 1
  17. 30
  18. 6
  19. a power cable
  20. 25
  21. 7
  22. 5
  23. 9
  24. 5
  25. 160
  26. mAh
  27. 120
  28. 40
  29. 125
  30. 80
  31. 12
  32. 2
  33. 10
  34. 1
  35. 3
  36. 4
  37. 2
  38. 7
  39. 10.5
  40. 5

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