← Power for robots lesson New set →

Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 481 · 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 10% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  2. 2.🔋 A robot’s battery is at 75% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  3. 3.🔋 A robot’s battery is at 70% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  4. 4.🔋 What should you do with a swollen or damaged robot battery? (a) throw it in a fire (b) charge it again (c) squeeze it flat (d) give it to an adult
  5. 5.🔋 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%?
  6. 6.🔋 A robot’s battery holds 1500 mAh and the robot uses 500 mA. For how many hours can it run?
  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.🔋 What powers most moving robots? (a) a candle (b) a water tank (c) a rechargeable battery (d) a tiny magnet
  9. 9.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  10. 10.🔋 A robot’s battery holds 4000 mAh and the robot uses 1000 mA. For how many hours can it run?
  11. 11.🔋 A robot uses 5% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  12. 12.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  13. 13.🔋 A robot’s battery holds 200 mAh and the robot uses 200 mA. For how many hours can it run?
  14. 14.🔋 A robot uses 2% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  15. 15.🔋 A robot uses 10% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  16. 16.🔋 Battery capacity (how much it holds) is often written in … (a) °C (b) km (c) kg (d) mAh
  17. 17.🔋 A robot’s battery is at 40% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  18. 18.🔋 A robot uses 25% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  19. 19.🔋 A robot’s battery is at 75% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  20. 20.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  21. 21.🔋 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%?
  22. 22.🔋 What does a robot vacuum do when its battery is low? (a) explodes (b) turns into a car (c) goes back to its dock (d) keeps going for ever
  23. 23.🔋 A robot uses 10% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  24. 24.🔋 A robot’s battery holds 1400 mAh and the robot uses 200 mA. For how many hours can it run?
  25. 25.🔋 A robot uses 4% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  26. 26.🔋 A robot’s battery is at 95%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  27. 27.🔋 A robot’s battery is at 0% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  28. 28.🔋 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
  29. 29.🔋 A robot’s battery holds 250 mAh and the robot uses 250 mA. For how many hours can it run?
  30. 30.🔋 A robot’s battery is at 0% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  31. 31.🔋 A robot’s battery is at 90%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  32. 32.🔋 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%?
  33. 33.🔋 A robot uses 4% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  34. 34.🔋 A robot uses 10% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  35. 35.🔋 A robot’s battery is at 10%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  36. 36.🔋 A robot uses 25% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  37. 37.🔋 A robot uses 20% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  38. 38.🔋 Many robots on far-away planets get energy from … (a) wind-up keys (b) sunlight (solar panels) (c) petrol pumps (d) shop batteries
  39. 39.🔋 A robot’s battery holds 2800 mAh and the robot uses 400 mA. For how many hours can it run?
  40. 40.🔋 A robot’s battery holds 1000 mAh and the robot uses 200 mA. For how many hours can it run?

Answer key

  1. 180
  2. 10
  3. 30
  4. give it to an adult
  5. 9
  6. 3
  7. 60
  8. a rechargeable battery
  9. 7.5
  10. 4
  11. 60
  12. 4.5
  13. 1
  14. 250
  15. 10
  16. mAh
  17. 30
  18. 4
  19. 50
  20. 6
  21. 4
  22. goes back to its dock
  23. 50
  24. 7
  25. 150
  26. 19
  27. 40
  28. a power cable
  29. 1
  30. 100
  31. 18
  32. 2
  33. 25
  34. 60
  35. 2
  36. 24
  37. 15
  38. sunlight (solar panels)
  39. 7
  40. 5

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