← Power for robots lesson New set →

Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 539 · 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 arm bolted to a factory floor usually gets its power from … (a) a solar panel (b) a coin cell (c) a power cable (d) a wind-up key
  2. 2.🔋 A robot’s battery is at 50%. Each lap of the track uses 25%. How many laps can it do before the battery reaches 0%?
  3. 3.🔋 A robot uses 4% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  4. 4.🔋 What does a robot vacuum do when its battery is low? (a) keeps going for ever (b) explodes (c) turns into a car (d) goes back to its dock
  5. 5.🔋 A robot’s battery holds 8000 mAh and the robot uses 1000 mA. For how many hours can it run?
  6. 6.🔋 A robot’s battery is at 0% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  7. 7.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  8. 8.🔋 A robot’s battery is at 60% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  9. 9.🔋 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%?
  10. 10.🔋 A robot uses 20% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  11. 11.🔋 A robot’s battery is at 0% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  12. 12.🔋 A robot’s battery is at 40% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  13. 13.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  14. 14.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  15. 15.🔋 A robot uses 2% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  16. 16.🔋 A robot uses 2% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  17. 17.🔋 A robot’s battery holds 250 mAh and the robot uses 250 mA. For how many hours can it run?
  18. 18.🔋 What powers most moving robots? (a) a candle (b) a rechargeable battery (c) a water tank (d) a tiny magnet
  19. 19.🔋 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%?
  20. 20.🔋 A robot’s battery holds 750 mAh and the robot uses 250 mA. For how many hours can it run?
  21. 21.🔋 A robot’s battery is at 50%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  22. 22.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  23. 23.🔋 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%?
  24. 24.🔋 What should you do with a swollen or damaged robot battery? (a) throw it in a fire (b) give it to an adult (c) charge it again (d) squeeze it flat
  25. 25.🔋 A robot uses 5% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  26. 26.🔋 A robot uses 25% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  27. 27.🔋 A robot’s battery is at 70%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  28. 28.🔋 A robot’s battery is at 25% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  29. 29.🔋 A robot’s battery is at 10% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  30. 30.🔋 A robot’s battery is at 35%. 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 75% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  32. 32.🔋 A robot’s battery holds 1000 mAh and the robot uses 250 mA. For how many hours can it run?
  33. 33.🔋 A robot’s battery is at 20% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  34. 34.🔋 A robot’s battery is at 60%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  35. 35.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  36. 36.🔋 A robot’s battery holds 1600 mAh and the robot uses 200 mA. For how many hours can it run?
  37. 37.🔋 A robot uses 4% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  38. 38.🔋 A robot’s battery holds 3000 mAh and the robot uses 1000 mA. For how many hours can it run?
  39. 39.🔋 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%?
  40. 40.🔋 A robot’s battery holds 1600 mAh and the robot uses 400 mA. For how many hours can it run?

Answer key

  1. a power cable
  2. 2
  3. 25
  4. goes back to its dock
  5. 8
  6. 200
  7. 7.5
  8. 20
  9. 4
  10. 25
  11. 40
  12. 60
  13. 9
  14. 12
  15. 200
  16. 150
  17. 1
  18. a rechargeable battery
  19. 8
  20. 3
  21. 10
  22. 6
  23. 9
  24. give it to an adult
  25. 80
  26. 24
  27. 7
  28. 30
  29. 90
  30. 7
  31. 10
  32. 4
  33. 160
  34. 12
  35. 10.5
  36. 8
  37. 100
  38. 3
  39. 19
  40. 4

Free robotics lessons, practice and worksheets at talentjr.in/robotics-for-kids