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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 199 · 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 holds 1000 mAh and the robot uses 500 mA. For how many hours can it run?
  2. 2.🔋 A robot’s battery holds 3000 mAh and the robot uses 500 mA. For how many hours can it run?
  3. 3.🔋 A robot’s battery holds 800 mAh and the robot uses 200 mA. For how many hours can it run?
  4. 4.🔋 What does a robot vacuum do when its battery is low? (a) turns into a car (b) keeps going for ever (c) explodes (d) goes back to its dock
  5. 5.🔋 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%?
  6. 6.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  7. 7.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  8. 8.🔋 A robot uses 2% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  9. 9.🔋 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
  10. 10.🔋 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%?
  11. 11.🔋 A robot uses 2% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  12. 12.🔋 A robot’s battery holds 4000 mAh and the robot uses 1000 mA. For how many hours can it run?
  13. 13.🔋 A robot’s battery holds 1400 mAh and the robot uses 200 mA. For how many hours can it run?
  14. 14.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a wind-up key (b) a solar panel (c) a power cable (d) a coin cell
  15. 15.🔋 Battery capacity (how much it holds) is often written in … (a) °C (b) km (c) mAh (d) kg
  16. 16.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  17. 17.🔋 A robot’s battery holds 800 mAh and the robot uses 400 mA. For how many hours can it run?
  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 is at 10% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  20. 20.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  21. 21.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  22. 22.🔋 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%?
  23. 23.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  24. 24.🔋 A robot uses 5% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  25. 25.🔋 A robot uses 5% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  26. 26.🔋 A robot’s battery holds 200 mAh and the robot uses 100 mA. For how many hours can it run?
  27. 27.🔋 A robot’s battery holds 1200 mAh and the robot uses 200 mA. For how many hours can it run?
  28. 28.🔋 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%?
  29. 29.🔋 A robot’s battery holds 2000 mAh and the robot uses 400 mA. For how many hours can it run?
  30. 30.🔋 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%?
  31. 31.🔋 A robot’s battery is at 10% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  32. 32.🔋 A robot uses 25% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  33. 33.🔋 A robot’s battery is at 5% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  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 80% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  36. 36.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  37. 37.🔋 A robot’s battery is at 25% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  38. 38.🔋 A robot’s battery is at 0% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  39. 39.🔋 A robot’s battery holds 1500 mAh and the robot uses 250 mA. For how many hours can it run?
  40. 40.🔋 A robot uses 4% of its battery every 5 minutes. How many minutes does a full battery (100%) last?

Answer key

  1. 2
  2. 6
  3. 4
  4. goes back to its dock
  5. 2
  6. 9
  7. 12
  8. 200
  9. give it to an adult
  10. 9
  11. 100
  12. 4
  13. 7
  14. a power cable
  15. mAh
  16. 4.5
  17. 2
  18. 1
  19. 180
  20. 10.5
  21. 3
  22. 4
  23. 6
  24. 100
  25. 120
  26. 2
  27. 6
  28. 4
  29. 5
  30. 5
  31. 90
  32. 4
  33. 190
  34. 7
  35. 20
  36. 7.5
  37. 30
  38. 40
  39. 6
  40. 125

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