← Power for robots lesson New set →

Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 70 · 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 75% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  2. 2.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  3. 3.🔋 A robot uses 10% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  4. 4.🔋 A robot uses 25% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  5. 5.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  6. 6.🔋 Many robots on far-away planets get energy from … (a) petrol pumps (b) wind-up keys (c) shop batteries (d) sunlight (solar panels)
  7. 7.🔋 A robot uses 20% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  8. 8.🔋 A robot uses 20% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  9. 9.🔋 What should you do with a swollen or damaged robot battery? (a) charge it again (b) throw it in a fire (c) squeeze it flat (d) give it to an adult
  10. 10.🔋 A robot uses 20% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  11. 11.🔋 A robot’s battery is at 40% and charging adds 20% 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 10%. How many laps can it do before the battery reaches 0%?
  13. 13.🔋 What powers most moving robots? (a) a rechargeable battery (b) a tiny magnet (c) a water tank (d) a candle
  14. 14.🔋 A robot’s battery is at 20% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  15. 15.🔋 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%?
  16. 16.🔋 A robot’s battery holds 6000 mAh and the robot uses 1000 mA. For how many hours can it run?
  17. 17.🔋 Battery capacity (how much it holds) is often written in … (a) kg (b) °C (c) mAh (d) km
  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 arm bolted to a factory floor usually gets its power from … (a) a wind-up key (b) a coin cell (c) a solar panel (d) a power cable
  20. 20.🔋 A robot’s battery holds 500 mAh and the robot uses 250 mA. For how many hours can it run?
  21. 21.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  22. 22.🔋 A robot’s battery is at 60%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  23. 23.🔋 A robot uses 2% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  24. 24.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  25. 25.🔋 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%?
  26. 26.🔋 A robot’s battery is at 30% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  27. 27.🔋 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%?
  28. 28.🔋 A robot’s battery holds 800 mAh and the robot uses 200 mA. For how many hours can it run?
  29. 29.🔋 What does a robot vacuum do when its battery is low? (a) turns into a car (b) goes back to its dock (c) keeps going for ever (d) explodes
  30. 30.🔋 A robot uses 5% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  31. 31.🔋 A robot’s battery holds 700 mAh and the robot uses 100 mA. For how many hours can it run?
  32. 32.🔋 A robot’s battery is at 60% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  33. 33.🔋 A robot’s battery holds 500 mAh and the robot uses 500 mA. For how many hours can it run?
  34. 34.🔋 A robot’s battery holds 1200 mAh and the robot uses 200 mA. For how many hours can it run?
  35. 35.🔋 A robot’s battery holds 400 mAh and the robot uses 200 mA. For how many hours can it run?
  36. 36.🔋 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%?
  37. 37.🔋 A robot’s battery holds 2000 mAh and the robot uses 250 mA. For how many hours can it run?
  38. 38.🔋 A robot’s battery holds 400 mAh and the robot uses 100 mA. For how many hours can it run?
  39. 39.🔋 A robot uses 5% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  40. 40.🔋 A robot’s battery is at 90% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?

Answer key

  1. 10
  2. 10.5
  3. 10
  4. 20
  5. 9
  6. sunlight (solar panels)
  7. 20
  8. 30
  9. give it to an adult
  10. 25
  11. 30
  12. 4
  13. a rechargeable battery
  14. 160
  15. 2
  16. 6
  17. mAh
  18. 3
  19. a power cable
  20. 2
  21. 12
  22. 6
  23. 300
  24. 3
  25. 9
  26. 70
  27. 3
  28. 4
  29. goes back to its dock
  30. 120
  31. 7
  32. 80
  33. 1
  34. 6
  35. 2
  36. 10
  37. 8
  38. 4
  39. 100
  40. 10

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