← Power for robots lesson New set →

Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 364 · 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.🔋 What powers most moving robots? (a) a tiny magnet (b) a rechargeable battery (c) a water tank (d) a candle
  2. 2.🔋 A robot’s battery is at 100%. Each lap of the track uses 20%. How many laps can it do before the battery reaches 0%?
  3. 3.🔋 A robot uses 20% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  4. 4.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  5. 5.🔋 A robot’s battery is at 20% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  6. 6.🔋 A robot uses 25% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  7. 7.🔋 A robot uses 5% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  8. 8.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  9. 9.🔋 A robot’s battery is at 75% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  10. 10.🔋 A robot uses 2% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  11. 11.🔋 A robot’s battery is at 80% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  12. 12.🔋 A robot’s battery is at 10% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  13. 13.🔋 Many robots on far-away planets get energy from … (a) petrol pumps (b) shop batteries (c) sunlight (solar panels) (d) wind-up keys
  14. 14.🔋 A robot’s battery is at 40% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  15. 15.🔋 A robot’s battery holds 1200 mAh and the robot uses 200 mA. For how many hours can it run?
  16. 16.🔋 What does a robot vacuum do when its battery is low? (a) explodes (b) keeps going for ever (c) turns into a car (d) goes back to its dock
  17. 17.🔋 A robot’s battery is at 0% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  18. 18.🔋 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%?
  19. 19.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  20. 20.🔋 A robot uses 20% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  21. 21.🔋 A robot’s battery holds 400 mAh and the robot uses 200 mA. For how many hours can it run?
  22. 22.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  23. 23.🔋 A robot’s battery is at 70% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  24. 24.🔋 A robot uses 25% 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 2 minutes. How many minutes does a full battery (100%) last?
  26. 26.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  27. 27.🔋 A robot uses 20% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  28. 28.🔋 A robot uses 2% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  29. 29.🔋 A robot’s battery holds 1400 mAh and the robot uses 200 mA. For how many hours can it run?
  30. 30.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  31. 31.🔋 What should you do with a swollen or damaged robot battery? (a) squeeze it flat (b) give it to an adult (c) charge it again (d) throw it in a fire
  32. 32.🔋 A robot uses 4% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  33. 33.🔋 A robot’s battery is at 20% and charging adds 20% 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.🔋 Battery capacity (how much it holds) is often written in … (a) km (b) °C (c) mAh (d) kg
  36. 36.🔋 A robot uses 10% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  37. 37.🔋 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%?
  38. 38.🔋 A robot’s battery holds 1000 mAh and the robot uses 200 mA. For how many hours can it run?
  39. 39.🔋 A robot uses 5% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  40. 40.🔋 A robot uses 5% of its battery every 5 minutes. How many minutes does a full battery (100%) last?

Answer key

  1. a rechargeable battery
  2. 5
  3. 10
  4. 12
  5. 80
  6. 16
  7. 120
  8. 3
  9. 10
  10. 150
  11. 10
  12. 90
  13. sunlight (solar panels)
  14. 120
  15. 6
  16. goes back to its dock
  17. 40
  18. 2
  19. 4.5
  20. 20
  21. 2
  22. 7.5
  23. 30
  24. 20
  25. 40
  26. 9
  27. 15
  28. 50
  29. 7
  30. 10.5
  31. give it to an adult
  32. 150
  33. 40
  34. 12
  35. mAh
  36. 50
  37. 2
  38. 5
  39. 80
  40. 100

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