← Power for robots lesson New set →

Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 976 · 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 20% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  2. 2.🔋 A robot’s battery is at 0% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  3. 3.🔋 A robot uses 20% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  4. 4.🔋 What should you do with a swollen or damaged robot battery? (a) throw it in a fire (b) squeeze it flat (c) give it to an adult (d) charge it again
  5. 5.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  6. 6.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  7. 7.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a coin cell (b) a power cable (c) a solar panel (d) a wind-up key
  8. 8.🔋 A robot’s battery is at 60% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  9. 9.🔋 What powers most moving robots? (a) a candle (b) a rechargeable battery (c) a tiny magnet (d) a water tank
  10. 10.🔋 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%?
  11. 11.🔋 A robot uses 20% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  12. 12.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  13. 13.🔋 A robot’s battery holds 2000 mAh and the robot uses 500 mA. For how many hours can it run?
  14. 14.🔋 A robot uses 2% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  15. 15.🔋 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%?
  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 runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  18. 18.🔋 A robot’s battery is at 45%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  19. 19.🔋 A robot’s battery holds 8000 mAh and the robot uses 1000 mA. For how many hours can it run?
  20. 20.🔋 Many robots on far-away planets get energy from … (a) sunlight (solar panels) (b) petrol pumps (c) shop batteries (d) wind-up keys
  21. 21.🔋 A robot uses 5% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  22. 22.🔋 What does a robot vacuum do when its battery is low? (a) goes back to its dock (b) turns into a car (c) explodes (d) keeps going for ever
  23. 23.🔋 A robot’s battery holds 1000 mAh and the robot uses 500 mA. For how many hours can it run?
  24. 24.🔋 A robot’s battery is at 70% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  25. 25.🔋 A robot’s battery is at 20% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  26. 26.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  27. 27.🔋 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%?
  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 runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  30. 30.🔋 A robot’s battery is at 20% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  31. 31.🔋 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%?
  32. 32.🔋 A robot uses 10% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  33. 33.🔋 A robot’s battery holds 400 mAh and the robot uses 100 mA. For how many hours can it run?
  34. 34.🔋 A robot’s battery holds 250 mAh and the robot uses 250 mA. For how many hours can it run?
  35. 35.🔋 A robot uses 2% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  36. 36.🔋 A robot uses 2% of its battery every 1 minute. 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 200 mAh and the robot uses 100 mA. For how many hours can it run?
  39. 39.🔋 Battery capacity (how much it holds) is often written in … (a) km (b) kg (c) mAh (d) °C
  40. 40.🔋 A robot’s battery holds 3000 mAh and the robot uses 500 mA. For how many hours can it run?

Answer key

  1. 30
  2. 100
  3. 10
  4. give it to an adult
  5. 10.5
  6. 12
  7. a power cable
  8. 40
  9. a rechargeable battery
  10. 5
  11. 5
  12. 3
  13. 4
  14. 250
  15. 3
  16. 4.5
  17. 9
  18. 9
  19. 8
  20. sunlight (solar panels)
  21. 60
  22. goes back to its dock
  23. 2
  24. 60
  25. 40
  26. 6
  27. 3
  28. 30
  29. 7.5
  30. 80
  31. 2
  32. 60
  33. 4
  34. 1
  35. 100
  36. 50
  37. 2
  38. 2
  39. mAh
  40. 6

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