← Power for robots lesson New set →

Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 990 · 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 uses 4% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  2. 2.🔋 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
  3. 3.🔋 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%?
  4. 4.🔋 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%?
  5. 5.🔋 A robot uses 25% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  6. 6.🔋 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%?
  7. 7.🔋 A robot’s battery is at 40% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  8. 8.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a coin cell (b) a solar panel (c) a power cable (d) a wind-up key
  9. 9.🔋 A robot uses 2% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  10. 10.🔋 A robot’s battery holds 800 mAh and the robot uses 100 mA. For how many hours can it run?
  11. 11.🔋 A robot’s battery is at 45% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  12. 12.🔋 A robot uses 10% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  13. 13.🔋 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%?
  14. 14.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  15. 15.🔋 A robot’s battery is at 25% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  16. 16.🔋 A robot’s battery holds 750 mAh and the robot uses 250 mA. For how many hours can it run?
  17. 17.🔋 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%?
  18. 18.🔋 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%?
  19. 19.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  20. 20.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  21. 21.🔋 Battery capacity (how much it holds) is often written in … (a) kg (b) km (c) mAh (d) °C
  22. 22.🔋 A robot’s battery is at 0% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  23. 23.🔋 A robot’s battery holds 200 mAh and the robot uses 200 mA. For how many hours can it run?
  24. 24.🔋 A robot’s battery is at 50%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  25. 25.🔋 A robot’s battery holds 2400 mAh and the robot uses 400 mA. For how many hours can it run?
  26. 26.🔋 A robot’s battery is at 20%. Each lap of the track uses 10%. 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 holds 500 mAh and the robot uses 500 mA. For how many hours can it run?
  29. 29.🔋 Many robots on far-away planets get energy from … (a) petrol pumps (b) shop batteries (c) wind-up keys (d) sunlight (solar panels)
  30. 30.🔋 A robot uses 5% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  31. 31.🔋 A robot’s battery is at 65% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  32. 32.🔋 A robot’s battery holds 6000 mAh and the robot uses 1000 mA. For how many hours can it run?
  33. 33.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  34. 34.🔋 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%?
  35. 35.🔋 A robot uses 4% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  36. 36.🔋 A robot uses 4% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  37. 37.🔋 What should you do with a swollen or damaged robot battery? (a) give it to an adult (b) squeeze it flat (c) throw it in a fire (d) charge it again
  38. 38.🔋 A robot’s battery holds 600 mAh and the robot uses 100 mA. For how many hours can it run?
  39. 39.🔋 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%?
  40. 40.🔋 What powers most moving robots? (a) a candle (b) a water tank (c) a rechargeable battery (d) a tiny magnet

Answer key

  1. 150
  2. goes back to its dock
  3. 3
  4. 2
  5. 8
  6. 2
  7. 60
  8. a power cable
  9. 150
  10. 8
  11. 110
  12. 20
  13. 12
  14. 3
  15. 150
  16. 3
  17. 9
  18. 5
  19. 12
  20. 7.5
  21. mAh
  22. 40
  23. 1
  24. 5
  25. 6
  26. 2
  27. 7
  28. 1
  29. sunlight (solar panels)
  30. 60
  31. 70
  32. 6
  33. 4.5
  34. 7
  35. 125
  36. 75
  37. give it to an adult
  38. 6
  39. 4
  40. a rechargeable battery

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