← Power for robots lesson New set →

Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 60 · 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 holds 700 mAh and the robot uses 100 mA. For how many hours can it run?
  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 runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  4. 4.🔋 What should you do with a swollen or damaged robot battery? (a) squeeze it flat (b) throw it in a fire (c) give it to an adult (d) charge it again
  5. 5.🔋 What powers most moving robots? (a) a water tank (b) a rechargeable battery (c) a tiny magnet (d) a candle
  6. 6.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  7. 7.🔋 Many robots on far-away planets get energy from … (a) petrol pumps (b) wind-up keys (c) shop batteries (d) sunlight (solar panels)
  8. 8.🔋 A robot uses 20% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  9. 9.🔋 A robot’s battery holds 3000 mAh and the robot uses 500 mA. For how many hours can it run?
  10. 10.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  11. 11.🔋 A robot’s battery is at 0% 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 20%. How many laps can it do before the battery reaches 0%?
  13. 13.🔋 A robot’s battery is at 75% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  14. 14.🔋 Battery capacity (how much it holds) is often written in … (a) °C (b) mAh (c) km (d) kg
  15. 15.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  16. 16.🔋 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%?
  17. 17.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a power cable (b) a wind-up key (c) a coin cell (d) a solar panel
  18. 18.🔋 What does a robot vacuum do when its battery is low? (a) keeps going for ever (b) goes back to its dock (c) turns into a car (d) explodes
  19. 19.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  20. 20.🔋 A robot uses 25% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  21. 21.🔋 A robot’s battery is at 0% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  22. 22.🔋 A robot’s battery holds 6000 mAh and the robot uses 1000 mA. For how many hours can it run?
  23. 23.🔋 A robot uses 10% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  24. 24.🔋 A robot uses 25% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  25. 25.🔋 A robot’s battery is at 60% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  26. 26.🔋 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%?
  27. 27.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  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 60%. Each lap of the track uses 20%. How many laps can it do before the battery reaches 0%?
  30. 30.🔋 A robot uses 4% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  31. 31.🔋 A robot’s battery is at 25% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  32. 32.🔋 A robot’s battery is at 50% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  33. 33.🔋 A robot uses 10% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  34. 34.🔋 A robot’s battery holds 1000 mAh and the robot uses 500 mA. For how many hours can it run?
  35. 35.🔋 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%?
  36. 36.🔋 A robot’s battery holds 500 mAh and the robot uses 250 mA. For how many hours can it run?
  37. 37.🔋 A robot’s battery holds 3500 mAh and the robot uses 500 mA. For how many hours can it run?
  38. 38.🔋 A robot’s battery holds 750 mAh and the robot uses 250 mA. For how many hours can it run?
  39. 39.🔋 A robot’s battery is at 45%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  40. 40.🔋 A robot’s battery holds 8000 mAh and the robot uses 1000 mA. For how many hours can it run?

Answer key

  1. 7
  2. 10.5
  3. 4.5
  4. give it to an adult
  5. a rechargeable battery
  6. 9
  7. sunlight (solar panels)
  8. 10
  9. 6
  10. 7.5
  11. 50
  12. 2
  13. 10
  14. mAh
  15. 12
  16. 5
  17. a power cable
  18. goes back to its dock
  19. 3
  20. 4
  21. 100
  22. 6
  23. 20
  24. 8
  25. 40
  26. 17
  27. 6
  28. 10
  29. 3
  30. 150
  31. 30
  32. 20
  33. 50
  34. 2
  35. 3
  36. 2
  37. 7
  38. 3
  39. 9
  40. 8

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