← Power for robots lesson New set →

Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 370 · 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 is at 55%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  2. 2.🔋 Battery capacity (how much it holds) is often written in … (a) °C (b) kg (c) mAh (d) km
  3. 3.🔋 A robot’s battery holds 700 mAh and the robot uses 100 mA. For how many hours can it run?
  4. 4.🔋 What does a robot vacuum do when its battery is low? (a) turns into a car (b) goes back to its dock (c) explodes (d) keeps going for ever
  5. 5.🔋 A robot uses 10% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  6. 6.🔋 A robot uses 4% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  7. 7.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  8. 8.🔋 A robot uses 25% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  9. 9.🔋 A robot’s battery is at 100%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  10. 10.🔋 A robot’s battery holds 1200 mAh and the robot uses 400 mA. For how many hours can it run?
  11. 11.🔋 A robot’s battery is at 90% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  12. 12.🔋 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%?
  13. 13.🔋 Many robots on far-away planets get energy from … (a) wind-up keys (b) shop batteries (c) sunlight (solar panels) (d) petrol pumps
  14. 14.🔋 A robot’s battery holds 7000 mAh and the robot uses 1000 mA. For how many hours can it run?
  15. 15.🔋 A robot’s battery holds 1000 mAh and the robot uses 1000 mA. For how many hours can it run?
  16. 16.🔋 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%?
  17. 17.🔋 A robot’s battery is at 80%. Each lap of the track uses 20%. How many laps can it do before the battery reaches 0%?
  18. 18.🔋 A robot’s battery holds 300 mAh and the robot uses 100 mA. For how many hours can it run?
  19. 19.🔋 A robot’s battery is at 60% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  20. 20.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  21. 21.🔋 A robot uses 2% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  22. 22.🔋 A robot uses 4% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  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’s battery is at 20%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  25. 25.🔋 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%?
  26. 26.🔋 A robot uses 20% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  27. 27.🔋 A robot’s battery is at 0% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  28. 28.🔋 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
  29. 29.🔋 A robot uses 4% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  30. 30.🔋 A robot’s battery holds 1000 mAh and the robot uses 200 mA. For how many hours can it run?
  31. 31.🔋 What powers most moving robots? (a) a candle (b) a rechargeable battery (c) a tiny magnet (d) a water tank
  32. 32.🔋 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%?
  33. 33.🔋 A robot’s battery is at 25% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  34. 34.🔋 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%?
  35. 35.🔋 A robot’s battery holds 1200 mAh and the robot uses 200 mA. For how many hours can it run?
  36. 36.🔋 A robot uses 4% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  37. 37.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  38. 38.🔋 A robot uses 10% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  39. 39.🔋 A robot’s battery holds 1000 mAh and the robot uses 500 mA. For how many hours can it run?
  40. 40.🔋 A robot’s battery holds 200 mAh and the robot uses 200 mA. For how many hours can it run?

Answer key

  1. 11
  2. mAh
  3. 7
  4. goes back to its dock
  5. 10
  6. 150
  7. 9
  8. 24
  9. 10
  10. 3
  11. 10
  12. 2
  13. sunlight (solar panels)
  14. 7
  15. 1
  16. 3
  17. 4
  18. 3
  19. 20
  20. 10.5
  21. 300
  22. 50
  23. 6
  24. 4
  25. 18
  26. 5
  27. 50
  28. give it to an adult
  29. 100
  30. 5
  31. a rechargeable battery
  32. 12
  33. 30
  34. 5
  35. 6
  36. 75
  37. 12
  38. 60
  39. 2
  40. 1

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