← Power for robots lesson New set →

Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 223 · 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.🔋 Battery capacity (how much it holds) is often written in … (a) kg (b) °C (c) mAh (d) km
  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’s battery is at 80% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  4. 4.🔋 What powers most moving robots? (a) a water tank (b) a tiny magnet (c) a candle (d) a rechargeable battery
  5. 5.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  6. 6.🔋 Many robots on far-away planets get energy from … (a) wind-up keys (b) shop batteries (c) petrol pumps (d) sunlight (solar panels)
  7. 7.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  8. 8.🔋 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%?
  9. 9.🔋 A robot uses 5% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  10. 10.🔋 A robot’s battery is at 0% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  11. 11.🔋 A robot’s battery holds 2500 mAh and the robot uses 500 mA. For how many hours can it run?
  12. 12.🔋 A robot uses 2% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  13. 13.🔋 A robot uses 5% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  14. 14.🔋 A robot uses 25% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  15. 15.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a solar panel (b) a coin cell (c) a wind-up key (d) a power cable
  16. 16.🔋 A robot’s battery is at 70%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  17. 17.🔋 A robot’s battery is at 80% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  18. 18.🔋 A robot uses 25% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  19. 19.🔋 A robot’s battery holds 400 mAh and the robot uses 400 mA. For how many hours can it run?
  20. 20.🔋 A robot uses 5% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  21. 21.🔋 A robot’s battery holds 100 mAh and the robot uses 100 mA. For how many hours can it run?
  22. 22.🔋 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%?
  23. 23.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  24. 24.🔋 A robot’s battery is at 0% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  25. 25.🔋 A robot’s battery holds 2000 mAh and the robot uses 250 mA. For how many hours can it run?
  26. 26.🔋 A robot’s battery holds 1200 mAh and the robot uses 200 mA. For how many hours can it run?
  27. 27.🔋 What does a robot vacuum do when its battery is low? (a) keeps going for ever (b) turns into a car (c) goes back to its dock (d) explodes
  28. 28.🔋 A robot’s battery holds 1000 mAh and the robot uses 1000 mA. For how many hours can it run?
  29. 29.🔋 A robot’s battery holds 4000 mAh and the robot uses 500 mA. For how many hours can it run?
  30. 30.🔋 A robot’s battery holds 2000 mAh and the robot uses 500 mA. For how many hours can it run?
  31. 31.🔋 A robot’s battery is at 55% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  32. 32.🔋 A robot uses 20% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  33. 33.🔋 A robot’s battery is at 75% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  34. 34.🔋 A robot’s battery holds 600 mAh and the robot uses 200 mA. For how many hours can it run?
  35. 35.🔋 A robot’s battery is at 50% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  36. 36.🔋 What should you do with a swollen or damaged robot battery? (a) charge it again (b) give it to an adult (c) throw it in a fire (d) squeeze it flat
  37. 37.🔋 A robot uses 20% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  38. 38.🔋 A robot’s battery holds 300 mAh and the robot uses 100 mA. For how many hours can it run?
  39. 39.🔋 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%?
  40. 40.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =

Answer key

  1. mAh
  2. 2
  3. 10
  4. a rechargeable battery
  5. 6
  6. sunlight (solar panels)
  7. 3
  8. 4
  9. 100
  10. 50
  11. 5
  12. 100
  13. 60
  14. 4
  15. a power cable
  16. 14
  17. 20
  18. 12
  19. 1
  20. 120
  21. 1
  22. 3
  23. 12
  24. 40
  25. 8
  26. 6
  27. goes back to its dock
  28. 1
  29. 8
  30. 4
  31. 90
  32. 10
  33. 10
  34. 3
  35. 50
  36. give it to an adult
  37. 20
  38. 3
  39. 6
  40. 4.5

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