← Power for robots lesson New set →

Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 117 · 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 50% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  2. 2.🔋 A robot’s battery holds 500 mAh and the robot uses 500 mA. For how many hours can it run?
  3. 3.🔋 A robot’s battery is at 75%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  4. 4.🔋 Many robots on far-away planets get energy from … (a) wind-up keys (b) shop batteries (c) petrol pumps (d) sunlight (solar panels)
  5. 5.🔋 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%?
  6. 6.🔋 What powers most moving robots? (a) a candle (b) a tiny magnet (c) a water tank (d) a rechargeable battery
  7. 7.🔋 A robot uses 10% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  8. 8.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a power cable (b) a wind-up key (c) a coin cell (d) a solar panel
  9. 9.🔋 A robot’s battery is at 80% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  10. 10.🔋 A robot uses 10% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  11. 11.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  12. 12.🔋 What should you do with a swollen or damaged robot battery? (a) charge it again (b) squeeze it flat (c) throw it in a fire (d) give it to an adult
  13. 13.🔋 Battery capacity (how much it holds) is often written in … (a) kg (b) km (c) mAh (d) °C
  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 0% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  16. 16.🔋 A robot’s battery is at 60% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  17. 17.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  18. 18.🔋 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%?
  19. 19.🔋 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
  20. 20.🔋 A robot uses 20% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  21. 21.🔋 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%?
  22. 22.🔋 A robot uses 2% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  23. 23.🔋 A robot’s battery holds 1250 mAh and the robot uses 250 mA. For how many hours can it run?
  24. 24.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  25. 25.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  26. 26.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  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.🔋 A robot’s battery holds 250 mAh and the robot uses 250 mA. For how many hours can it run?
  29. 29.🔋 A robot’s battery holds 1750 mAh and the robot uses 250 mA. For how many hours can it run?
  30. 30.🔋 A robot uses 25% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  31. 31.🔋 A robot’s battery holds 2800 mAh and the robot uses 400 mA. For how many hours can it run?
  32. 32.🔋 A robot uses 2% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  33. 33.🔋 A robot’s battery is at 45% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  34. 34.🔋 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%?
  35. 35.🔋 A robot uses 2% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  36. 36.🔋 A robot’s battery holds 200 mAh and the robot uses 200 mA. For how many hours can it run?
  37. 37.🔋 A robot uses 4% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  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 holds 2000 mAh and the robot uses 1000 mA. For how many hours can it run?
  40. 40.🔋 A robot uses 2% of its battery every 1 minute. How many minutes does a full battery (100%) last?

Answer key

  1. 20
  2. 1
  3. 15
  4. sunlight (solar panels)
  5. 8
  6. a rechargeable battery
  7. 50
  8. a power cable
  9. 20
  10. 60
  11. 3
  12. give it to an adult
  13. mAh
  14. 30
  15. 40
  16. 40
  17. 9
  18. 12
  19. goes back to its dock
  20. 15
  21. 5
  22. 250
  23. 5
  24. 6
  25. 4.5
  26. 7.5
  27. 50
  28. 1
  29. 7
  30. 24
  31. 7
  32. 200
  33. 110
  34. 2
  35. 100
  36. 1
  37. 25
  38. 7
  39. 2
  40. 50

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