← Power for robots lesson New set →

Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 372 · 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.🔋 Battery capacity (how much it holds) is often written in … (a) °C (b) kg (c) mAh (d) km
  2. 2.🔋 A robot’s battery holds 500 mAh and the robot uses 250 mA. For how many hours can it run?
  3. 3.🔋 A robot’s battery holds 300 mAh and the robot uses 100 mA. For how many hours can it run?
  4. 4.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  5. 5.🔋 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%?
  6. 6.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  7. 7.🔋 A robot’s battery is at 5% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  8. 8.🔋 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%?
  9. 9.🔋 A robot’s battery holds 1000 mAh and the robot uses 500 mA. For how many hours can it run?
  10. 10.🔋 A robot’s battery holds 700 mAh and the robot uses 100 mA. For how many hours can it run?
  11. 11.🔋 What powers most moving robots? (a) a rechargeable battery (b) a water tank (c) a tiny magnet (d) a candle
  12. 12.🔋 A robot’s battery holds 1400 mAh and the robot uses 200 mA. For how many hours can it run?
  13. 13.🔋 Many robots on far-away planets get energy from … (a) shop batteries (b) wind-up keys (c) sunlight (solar panels) (d) petrol pumps
  14. 14.🔋 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%?
  15. 15.🔋 A robot’s battery holds 1000 mAh and the robot uses 1000 mA. For how many hours can it run?
  16. 16.🔋 A robot uses 5% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  17. 17.🔋 A robot’s battery holds 1500 mAh and the robot uses 500 mA. For how many hours can it run?
  18. 18.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  19. 19.🔋 A robot’s battery holds 2000 mAh and the robot uses 400 mA. For how many hours can it run?
  20. 20.🔋 A robot’s battery holds 400 mAh and the robot uses 100 mA. For how many hours can it run?
  21. 21.🔋 A robot uses 4% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  22. 22.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  23. 23.🔋 A robot uses 25% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  24. 24.🔋 A robot uses 5% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  25. 25.🔋 A robot’s battery holds 1250 mAh and the robot uses 250 mA. For how many hours can it run?
  26. 26.🔋 A robot uses 5% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  27. 27.🔋 What should you do with a swollen or damaged robot battery? (a) squeeze it flat (b) throw it in a fire (c) charge it again (d) give it to an adult
  28. 28.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  29. 29.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a wind-up key (b) a power cable (c) a coin cell (d) a solar panel
  30. 30.🔋 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%?
  31. 31.🔋 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%?
  32. 32.🔋 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%?
  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’s battery holds 2000 mAh and the robot uses 1000 mA. For how many hours can it run?
  35. 35.🔋 A robot’s battery is at 85% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  36. 36.🔋 A robot’s battery is at 70% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  37. 37.🔋 What does a robot vacuum do when its battery is low? (a) goes back to its dock (b) turns into a car (c) keeps going for ever (d) explodes
  38. 38.🔋 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%?
  39. 39.🔋 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%?
  40. 40.🔋 A robot uses 4% of its battery every 3 minutes. How many minutes does a full battery (100%) last?

Answer key

  1. mAh
  2. 2
  3. 3
  4. 6
  5. 2
  6. 10.5
  7. 190
  8. 8
  9. 2
  10. 7
  11. a rechargeable battery
  12. 7
  13. sunlight (solar panels)
  14. 4
  15. 1
  16. 40
  17. 3
  18. 7.5
  19. 5
  20. 4
  21. 125
  22. 9
  23. 20
  24. 120
  25. 5
  26. 60
  27. give it to an adult
  28. 12
  29. a power cable
  30. 13
  31. 3
  32. 4
  33. 25
  34. 2
  35. 30
  36. 30
  37. goes back to its dock
  38. 4
  39. 2
  40. 75

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