← Power for robots lesson New set →

Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 33 · 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 runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  2. 2.🔋 A robot uses 2% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  3. 3.🔋 A robot uses 10% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  4. 4.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a wind-up key (b) a solar panel (c) a coin cell (d) a power cable
  5. 5.🔋 What powers most moving robots? (a) a tiny magnet (b) a candle (c) a rechargeable battery (d) a water tank
  6. 6.🔋 A robot’s battery is at 40% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  7. 7.🔋 What does a robot vacuum do when its battery is low? (a) keeps going for ever (b) turns into a car (c) explodes (d) goes back to its dock
  8. 8.🔋 A robot’s battery holds 1000 mAh and the robot uses 1000 mA. For how many hours can it run?
  9. 9.🔋 Many robots on far-away planets get energy from … (a) sunlight (solar panels) (b) shop batteries (c) wind-up keys (d) petrol pumps
  10. 10.🔋 Battery capacity (how much it holds) is often written in … (a) kg (b) km (c) mAh (d) °C
  11. 11.🔋 A robot’s battery is at 80%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  12. 12.🔋 A robot uses 5% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  13. 13.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  14. 14.🔋 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
  15. 15.🔋 A robot’s battery holds 2000 mAh and the robot uses 500 mA. For how many hours can it run?
  16. 16.🔋 A robot’s battery holds 2000 mAh and the robot uses 1000 mA. For how many hours can it run?
  17. 17.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  18. 18.🔋 A robot uses 10% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  19. 19.🔋 A robot’s battery holds 800 mAh and the robot uses 200 mA. For how many hours can it run?
  20. 20.🔋 A robot’s battery is at 95% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  21. 21.🔋 A robot uses 20% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  22. 22.🔋 A robot’s battery is at 10% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  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 20% and charging adds 10% 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’s battery is at 50%. Each lap of the track uses 25%. How many laps can it do before the battery reaches 0%?
  27. 27.🔋 A robot’s battery holds 1400 mAh and the robot uses 200 mA. For how many hours can it run?
  28. 28.🔋 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%?
  29. 29.🔋 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%?
  30. 30.🔋 A robot’s battery holds 1750 mAh and the robot uses 250 mA. For how many hours can it run?
  31. 31.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  32. 32.🔋 A robot’s battery holds 1000 mAh and the robot uses 250 mA. For how many hours can it run?
  33. 33.🔋 A robot’s battery holds 2500 mAh and the robot uses 500 mA. For how many hours can it run?
  34. 34.🔋 A robot’s battery is at 30%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  35. 35.🔋 A robot uses 4% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  36. 36.🔋 A robot’s battery holds 2400 mAh and the robot uses 400 mA. For how many hours can it run?
  37. 37.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  38. 38.🔋 A robot uses 2% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  39. 39.🔋 A robot’s battery holds 1500 mAh and the robot uses 500 mA. For how many hours can it run?
  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. 6
  2. 250
  3. 50
  4. a power cable
  5. a rechargeable battery
  6. 30
  7. goes back to its dock
  8. 1
  9. sunlight (solar panels)
  10. mAh
  11. 8
  12. 80
  13. 9
  14. give it to an adult
  15. 4
  16. 2
  17. 4.5
  18. 10
  19. 4
  20. 10
  21. 30
  22. 90
  23. 12
  24. 80
  25. 40
  26. 2
  27. 7
  28. 2
  29. 3
  30. 7
  31. 3
  32. 4
  33. 5
  34. 3
  35. 50
  36. 6
  37. 7.5
  38. 150
  39. 3
  40. 6

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