← Power for robots lesson New set →

Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 141 · 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’s battery holds 1250 mAh and the robot uses 250 mA. For how many hours can it run?
  2. 2.🔋 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%?
  3. 3.🔋 A robot uses 10% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  4. 4.🔋 What powers most moving robots? (a) a tiny magnet (b) a candle (c) a water tank (d) a rechargeable battery
  5. 5.🔋 What should you do with a swollen or damaged robot battery? (a) give it to an adult (b) throw it in a fire (c) squeeze it flat (d) charge it again
  6. 6.🔋 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
  7. 7.🔋 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%?
  8. 8.🔋 A robot’s battery holds 1000 mAh and the robot uses 250 mA. For how many hours can it run?
  9. 9.🔋 A robot’s battery holds 100 mAh and the robot uses 100 mA. For how many hours can it run?
  10. 10.🔋 A robot uses 4% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  11. 11.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  12. 12.🔋 A robot’s battery holds 400 mAh and the robot uses 200 mA. For how many hours can it run?
  13. 13.🔋 A robot’s battery is at 40%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  14. 14.🔋 A robot uses 2% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  15. 15.🔋 A robot uses 5% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  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’s battery holds 600 mAh and the robot uses 100 mA. For how many hours can it run?
  18. 18.🔋 What does a robot vacuum do when its battery is low? (a) turns into a car (b) keeps going for ever (c) explodes (d) goes back to its dock
  19. 19.🔋 A robot’s battery holds 750 mAh and the robot uses 250 mA. For how many hours can it run?
  20. 20.🔋 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%?
  21. 21.🔋 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%?
  22. 22.🔋 A robot’s battery is at 65% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  23. 23.🔋 Battery capacity (how much it holds) is often written in … (a) °C (b) mAh (c) kg (d) km
  24. 24.🔋 A robot’s battery is at 65%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  25. 25.🔋 A robot uses 20% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  26. 26.🔋 Many robots on far-away planets get energy from … (a) wind-up keys (b) shop batteries (c) sunlight (solar panels) (d) petrol pumps
  27. 27.🔋 A robot’s battery holds 2000 mAh and the robot uses 250 mA. For how many hours can it run?
  28. 28.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  29. 29.🔋 A robot uses 10% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  30. 30.🔋 A robot’s battery is at 60% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  31. 31.🔋 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%?
  32. 32.🔋 A robot’s battery is at 25% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  33. 33.🔋 A robot’s battery holds 3200 mAh and the robot uses 400 mA. For how many hours can it run?
  34. 34.🔋 A robot’s battery holds 6000 mAh and the robot uses 1000 mA. For how many hours can it run?
  35. 35.🔋 A robot uses 5% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  36. 36.🔋 A robot’s battery holds 500 mAh and the robot uses 500 mA. For how many hours can it run?
  37. 37.🔋 A robot’s battery holds 400 mAh and the robot uses 400 mA. For how many hours can it run?
  38. 38.🔋 A robot’s battery holds 700 mAh and the robot uses 100 mA. For how many hours can it run?
  39. 39.🔋 A robot’s battery is at 90%. 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 800 mAh and the robot uses 100 mA. For how many hours can it run?

Answer key

  1. 5
  2. 7
  3. 50
  4. a rechargeable battery
  5. give it to an adult
  6. a power cable
  7. 3
  8. 4
  9. 1
  10. 75
  11. 10.5
  12. 2
  13. 4
  14. 50
  15. 120
  16. 4.5
  17. 6
  18. goes back to its dock
  19. 3
  20. 3
  21. 9
  22. 70
  23. mAh
  24. 13
  25. 5
  26. sunlight (solar panels)
  27. 8
  28. 6
  29. 60
  30. 40
  31. 2
  32. 30
  33. 8
  34. 6
  35. 60
  36. 1
  37. 1
  38. 7
  39. 18
  40. 8

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