← Power for robots lesson New set →

Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 4 · 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.🔋 What does a robot vacuum do when its battery is low? (a) goes back to its dock (b) explodes (c) turns into a car (d) keeps going for ever
  2. 2.🔋 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%?
  3. 3.🔋 A robot’s battery is at 10% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  4. 4.🔋 A robot’s battery is at 70%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  5. 5.🔋 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%?
  6. 6.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  7. 7.🔋 What should you do with a swollen or damaged robot battery? (a) charge it again (b) give it to an adult (c) throw it in a fire (d) squeeze it flat
  8. 8.🔋 A robot’s battery is at 80%. Each lap of the track uses 20%. How many laps can it do before the battery reaches 0%?
  9. 9.🔋 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%?
  10. 10.🔋 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%?
  11. 11.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  12. 12.🔋 A robot’s battery is at 25% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  13. 13.🔋 A robot’s battery holds 2000 mAh and the robot uses 500 mA. For how many hours can it run?
  14. 14.🔋 A robot’s battery holds 1000 mAh and the robot uses 200 mA. For how many hours can it run?
  15. 15.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  16. 16.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  17. 17.🔋 A robot’s battery holds 2800 mAh and the robot uses 400 mA. For how many hours can it run?
  18. 18.🔋 A robot’s battery holds 800 mAh and the robot uses 100 mA. For how many hours can it run?
  19. 19.🔋 A robot uses 25% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  20. 20.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a power cable (b) a solar panel (c) a wind-up key (d) a coin cell
  21. 21.🔋 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%?
  22. 22.🔋 A robot uses 5% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  23. 23.🔋 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%?
  24. 24.🔋 A robot’s battery holds 250 mAh and the robot uses 250 mA. For how many hours can it run?
  25. 25.🔋 A robot uses 20% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  26. 26.🔋 Many robots on far-away planets get energy from … (a) petrol pumps (b) sunlight (solar panels) (c) wind-up keys (d) shop batteries
  27. 27.🔋 A robot’s battery is at 30%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  28. 28.🔋 A robot’s battery holds 3500 mAh and the robot uses 500 mA. For how many hours can it run?
  29. 29.🔋 A robot’s battery is at 20% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  30. 30.🔋 A robot uses 10% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  31. 31.🔋 A robot’s battery is at 20% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  32. 32.🔋 A robot uses 10% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  33. 33.🔋 A robot’s battery is at 80% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  34. 34.🔋 A robot uses 10% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  35. 35.🔋 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%?
  36. 36.🔋 A robot’s battery holds 1250 mAh and the robot uses 250 mA. For how many hours can it run?
  37. 37.🔋 Battery capacity (how much it holds) is often written in … (a) °C (b) km (c) kg (d) mAh
  38. 38.🔋 A robot’s battery is at 85%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  39. 39.🔋 A robot’s battery is at 5% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  40. 40.🔋 A robot uses 25% of its battery every 4 minutes. How many minutes does a full battery (100%) last?

Answer key

  1. goes back to its dock
  2. 2
  3. 180
  4. 7
  5. 2
  6. 10.5
  7. give it to an adult
  8. 4
  9. 5
  10. 15
  11. 6
  12. 30
  13. 4
  14. 5
  15. 4.5
  16. 7.5
  17. 7
  18. 8
  19. 12
  20. a power cable
  21. 2
  22. 40
  23. 4
  24. 1
  25. 20
  26. sunlight (solar panels)
  27. 6
  28. 7
  29. 40
  30. 40
  31. 160
  32. 30
  33. 40
  34. 50
  35. 4
  36. 5
  37. mAh
  38. 17
  39. 190
  40. 16

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