← Power for robots lesson New set →

Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 283 · 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 uses 2% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  2. 2.🔋 A robot uses 5% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  3. 3.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  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 uses 10% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  6. 6.🔋 A robot’s battery is at 50%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  7. 7.🔋 A robot’s battery is at 75%. Each lap of the track uses 25%. How many laps can it do before the battery reaches 0%?
  8. 8.🔋 A robot uses 25% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  9. 9.🔋 Battery capacity (how much it holds) is often written in … (a) °C (b) mAh (c) kg (d) km
  10. 10.🔋 What powers most moving robots? (a) a candle (b) a rechargeable battery (c) a tiny magnet (d) a water tank
  11. 11.🔋 A robot’s battery holds 2000 mAh and the robot uses 250 mA. For how many hours can it run?
  12. 12.🔋 A robot’s battery is at 30%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  13. 13.🔋 A robot’s battery holds 300 mAh and the robot uses 100 mA. For how many hours can it run?
  14. 14.🔋 A robot uses 20% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  15. 15.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  16. 16.🔋 A robot’s battery is at 80% and charging adds 20% 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’s battery is at 50%. Each lap of the track uses 25%. How many laps can it do before the battery reaches 0%?
  19. 19.🔋 A robot’s battery is at 80% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  20. 20.🔋 A robot uses 4% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  21. 21.🔋 What should you do with a swollen or damaged robot battery? (a) throw it in a fire (b) charge it again (c) give it to an adult (d) squeeze it flat
  22. 22.🔋 A robot’s battery holds 800 mAh and the robot uses 200 mA. For how many hours can it run?
  23. 23.🔋 A robot’s battery holds 600 mAh and the robot uses 100 mA. For how many hours can it run?
  24. 24.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  25. 25.🔋 A robot’s battery holds 600 mAh and the robot uses 200 mA. For how many hours can it run?
  26. 26.🔋 A robot uses 5% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  27. 27.🔋 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%?
  28. 28.🔋 A robot’s battery holds 1200 mAh and the robot uses 200 mA. For how many hours can it run?
  29. 29.🔋 A robot uses 10% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  30. 30.🔋 A robot’s battery holds 400 mAh and the robot uses 100 mA. For how many hours can it run?
  31. 31.🔋 A robot’s battery is at 60% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  32. 32.🔋 A robot’s battery is at 10% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  33. 33.🔋 A robot’s battery holds 1000 mAh and the robot uses 1000 mA. For how many hours can it run?
  34. 34.🔋 A robot’s battery holds 750 mAh and the robot uses 250 mA. For how many hours can it run?
  35. 35.🔋 A robot uses 4% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  36. 36.🔋 A robot’s battery is at 75% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  37. 37.🔋 A robot uses 2% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  38. 38.🔋 A robot uses 10% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  39. 39.🔋 A robot’s battery is at 60%. Each lap of the track uses 20%. How many laps can it do before the battery reaches 0%?
  40. 40.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =

Answer key

  1. 250
  2. 60
  3. 3
  4. goes back to its dock
  5. 40
  6. 5
  7. 3
  8. 12
  9. mAh
  10. a rechargeable battery
  11. 8
  12. 6
  13. 3
  14. 5
  15. 7.5
  16. 10
  17. 8
  18. 2
  19. 20
  20. 50
  21. give it to an adult
  22. 4
  23. 6
  24. 10.5
  25. 3
  26. 80
  27. 2
  28. 6
  29. 20
  30. 4
  31. 40
  32. 90
  33. 1
  34. 3
  35. 125
  36. 50
  37. 100
  38. 10
  39. 3
  40. 9

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