← Power for robots lesson New set →

Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 663 · 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 5 minutes. How many minutes does a full battery (100%) last?
  2. 2.🔋 A robot uses 4% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  3. 3.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  4. 4.🔋 A robot’s battery holds 4000 mAh and the robot uses 500 mA. For how many hours can it run?
  5. 5.🔋 A robot’s battery holds 400 mAh and the robot uses 400 mA. For how many hours can it run?
  6. 6.🔋 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%?
  7. 7.🔋 A robot uses 2% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  8. 8.🔋 A robot uses 2% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  9. 9.🔋 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%?
  10. 10.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  11. 11.🔋 What powers most moving robots? (a) a water tank (b) a tiny magnet (c) a rechargeable battery (d) a candle
  12. 12.🔋 What should you do with a swollen or damaged robot battery? (a) give it to an adult (b) charge it again (c) throw it in a fire (d) squeeze it flat
  13. 13.🔋 A robot uses 4% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  14. 14.🔋 A robot’s battery is at 60% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  15. 15.🔋 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
  16. 16.🔋 A robot’s battery is at 75% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  17. 17.🔋 A robot’s battery holds 500 mAh and the robot uses 250 mA. For how many hours can it run?
  18. 18.🔋 A robot’s battery is at 0% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  19. 19.🔋 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%?
  20. 20.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  21. 21.🔋 A robot’s battery is at 65%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  22. 22.🔋 Many robots on far-away planets get energy from … (a) sunlight (solar panels) (b) wind-up keys (c) petrol pumps (d) shop batteries
  23. 23.🔋 Battery capacity (how much it holds) is often written in … (a) °C (b) kg (c) km (d) mAh
  24. 24.🔋 A robot uses 4% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  25. 25.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  26. 26.🔋 A robot’s battery is at 70%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  27. 27.🔋 A robot uses 2% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  28. 28.🔋 A robot’s battery is at 80% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  29. 29.🔋 A robot’s battery is at 80% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  30. 30.🔋 What does a robot vacuum do when its battery is low? (a) turns into a car (b) explodes (c) goes back to its dock (d) keeps going for ever
  31. 31.🔋 A robot uses 10% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  32. 32.🔋 A robot’s battery is at 25% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  33. 33.🔋 A robot uses 25% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  34. 34.🔋 A robot uses 25% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  35. 35.🔋 A robot’s battery is at 75% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  36. 36.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  37. 37.🔋 A robot’s battery is at 60% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  38. 38.🔋 A robot uses 5% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  39. 39.🔋 A robot uses 4% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  40. 40.🔋 A robot’s battery holds 6000 mAh and the robot uses 1000 mA. For how many hours can it run?

Answer key

  1. 125
  2. 75
  3. 6
  4. 8
  5. 1
  6. 2
  7. 200
  8. 300
  9. 3
  10. 9
  11. a rechargeable battery
  12. give it to an adult
  13. 100
  14. 20
  15. a power cable
  16. 10
  17. 2
  18. 200
  19. 3
  20. 3
  21. 13
  22. sunlight (solar panels)
  23. mAh
  24. 50
  25. 7.5
  26. 14
  27. 50
  28. 10
  29. 40
  30. goes back to its dock
  31. 10
  32. 30
  33. 12
  34. 24
  35. 50
  36. 4.5
  37. 40
  38. 120
  39. 25
  40. 6

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