← Power for robots lesson New set →

Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 528 · 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.🔋 What should you do with a swollen or damaged robot battery? (a) throw it in a fire (b) give it to an adult (c) charge it again (d) squeeze it flat
  2. 2.🔋 A robot’s battery is at 0% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  3. 3.🔋 A robot’s battery holds 4000 mAh and the robot uses 500 mA. For how many hours can it run?
  4. 4.🔋 What powers most moving robots? (a) a candle (b) a water tank (c) a tiny magnet (d) a rechargeable battery
  5. 5.🔋 A robot’s battery holds 2500 mAh and the robot uses 500 mA. For how many hours can it run?
  6. 6.🔋 A robot’s battery holds 750 mAh and the robot uses 250 mA. For how many hours can it run?
  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 runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  9. 9.🔋 A robot’s battery holds 2000 mAh and the robot uses 1000 mA. For how many hours can it run?
  10. 10.🔋 A robot uses 2% of its battery every 1 minute. 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.🔋 Battery capacity (how much it holds) is often written in … (a) mAh (b) °C (c) km (d) kg
  13. 13.🔋 A robot’s battery is at 10% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  14. 14.🔋 A robot’s battery is at 25% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  15. 15.🔋 A robot’s battery is at 75% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  16. 16.🔋 A robot’s battery holds 400 mAh and the robot uses 100 mA. For how many hours can it run?
  17. 17.🔋 A robot’s battery holds 500 mAh and the robot uses 250 mA. For how many hours can it run?
  18. 18.🔋 Many robots on far-away planets get energy from … (a) wind-up keys (b) sunlight (solar panels) (c) shop batteries (d) petrol pumps
  19. 19.🔋 A robot uses 25% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  20. 20.🔋 A robot uses 20% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  21. 21.🔋 A robot’s battery holds 300 mAh and the robot uses 100 mA. For how many hours can it run?
  22. 22.🔋 A robot’s battery holds 700 mAh and the robot uses 100 mA. For how many hours can it run?
  23. 23.🔋 What does a robot vacuum do when its battery is low? (a) goes back to its dock (b) explodes (c) keeps going for ever (d) turns into a car
  24. 24.🔋 A robot uses 5% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  25. 25.🔋 A robot uses 5% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  26. 26.🔋 A robot’s battery is at 100%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  27. 27.🔋 A robot uses 10% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  28. 28.🔋 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%?
  29. 29.🔋 A robot’s battery holds 3000 mAh and the robot uses 1000 mA. For how many hours can it run?
  30. 30.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  31. 31.🔋 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%?
  32. 32.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a coin cell (b) a wind-up key (c) a power cable (d) a solar panel
  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 uses 2% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  35. 35.🔋 A robot’s battery is at 35%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  36. 36.🔋 A robot’s battery holds 800 mAh and the robot uses 200 mA. For how many hours can it run?
  37. 37.🔋 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%?
  38. 38.🔋 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%?
  39. 39.🔋 A robot uses 4% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  40. 40.🔋 A robot uses 2% of its battery every 5 minutes. How many minutes does a full battery (100%) last?

Answer key

  1. give it to an adult
  2. 50
  3. 8
  4. a rechargeable battery
  5. 5
  6. 3
  7. 3
  8. 12
  9. 2
  10. 50
  11. 10.5
  12. mAh
  13. 90
  14. 30
  15. 50
  16. 4
  17. 2
  18. sunlight (solar panels)
  19. 12
  20. 25
  21. 3
  22. 7
  23. goes back to its dock
  24. 40
  25. 60
  26. 20
  27. 50
  28. 2
  29. 3
  30. 7.5
  31. 4
  32. a power cable
  33. 10
  34. 200
  35. 7
  36. 4
  37. 2
  38. 4
  39. 125
  40. 250

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