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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 99 · 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 20% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  2. 2.🔋 A robot’s battery holds 1000 mAh and the robot uses 500 mA. For how many hours can it run?
  3. 3.🔋 A robot’s battery holds 600 mAh and the robot uses 100 mA. For how many hours can it run?
  4. 4.🔋 What should you do with a swollen or damaged robot battery? (a) give it to an adult (b) throw it in a fire (c) charge it again (d) squeeze it flat
  5. 5.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  6. 6.🔋 A robot’s battery holds 1250 mAh and the robot uses 250 mA. For how many hours can it run?
  7. 7.🔋 A robot’s battery holds 100 mAh and the robot uses 100 mA. For how many hours can it run?
  8. 8.🔋 A robot’s battery is at 0% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  9. 9.🔋 A robot’s battery holds 1400 mAh and the robot uses 200 mA. For how many hours can it run?
  10. 10.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a wind-up key (b) a power cable (c) a coin cell (d) a solar panel
  11. 11.🔋 A robot’s battery is at 40%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  12. 12.🔋 A robot uses 4% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  13. 13.🔋 A robot’s battery holds 3000 mAh and the robot uses 1000 mA. For how many hours can it run?
  14. 14.🔋 A robot’s battery holds 1600 mAh and the robot uses 200 mA. For how many hours can it run?
  15. 15.🔋 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%?
  16. 16.🔋 A robot’s battery holds 700 mAh and the robot uses 100 mA. For how many hours can it run?
  17. 17.🔋 A robot’s battery holds 1000 mAh and the robot uses 250 mA. For how many hours can it run?
  18. 18.🔋 A robot’s battery is at 0% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  19. 19.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  20. 20.🔋 A robot uses 4% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  21. 21.🔋 A robot uses 10% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  22. 22.🔋 A robot uses 2% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  23. 23.🔋 A robot’s battery is at 100%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  24. 24.🔋 A robot uses 2% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  25. 25.🔋 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%?
  26. 26.🔋 A robot’s battery is at 80% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  27. 27.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  28. 28.🔋 Many robots on far-away planets get energy from … (a) sunlight (solar panels) (b) shop batteries (c) petrol pumps (d) wind-up keys
  29. 29.🔋 A robot uses 2% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  30. 30.🔋 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%?
  31. 31.🔋 A robot’s battery holds 800 mAh and the robot uses 400 mA. For how many hours can it run?
  32. 32.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  33. 33.🔋 A robot’s battery is at 20%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  34. 34.🔋 Battery capacity (how much it holds) is often written in … (a) kg (b) km (c) mAh (d) °C
  35. 35.🔋 A robot uses 25% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  36. 36.🔋 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%?
  37. 37.🔋 A robot uses 25% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  38. 38.🔋 A robot’s battery holds 3500 mAh and the robot uses 500 mA. For how many hours can it run?
  39. 39.🔋 A robot’s battery holds 1750 mAh and the robot uses 250 mA. For how many hours can it run?
  40. 40.🔋 A robot uses 5% of its battery every 1 minute. How many minutes does a full battery (100%) last?

Answer key

  1. 40
  2. 2
  3. 6
  4. give it to an adult
  5. 6
  6. 5
  7. 1
  8. 40
  9. 7
  10. a power cable
  11. 8
  12. 150
  13. 3
  14. 8
  15. 4
  16. 7
  17. 4
  18. 50
  19. 3
  20. 50
  21. 40
  22. 200
  23. 20
  24. 100
  25. 2
  26. 10
  27. 12
  28. sunlight (solar panels)
  29. 250
  30. 2
  31. 2
  32. 9
  33. 4
  34. mAh
  35. 4
  36. 13
  37. 12
  38. 7
  39. 7
  40. 20

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