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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 305 · 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 1250 mAh and the robot uses 250 mA. For how many hours can it run?
  2. 2.🔋 A robot’s battery is at 35%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  3. 3.🔋 A robot’s battery holds 1000 mAh and the robot uses 250 mA. For how many hours can it run?
  4. 4.🔋 Battery capacity (how much it holds) is often written in … (a) km (b) °C (c) mAh (d) kg
  5. 5.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  6. 6.🔋 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
  7. 7.🔋 What powers most moving robots? (a) a tiny magnet (b) a rechargeable battery (c) a candle (d) a water tank
  8. 8.🔋 A robot’s battery is at 75% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  9. 9.🔋 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%?
  10. 10.🔋 A robot uses 2% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  11. 11.🔋 A robot uses 2% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  12. 12.🔋 What should you do with a swollen or damaged robot battery? (a) charge it again (b) squeeze it flat (c) throw it in a fire (d) give it to an adult
  13. 13.🔋 A robot uses 4% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  14. 14.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  15. 15.🔋 Many robots on far-away planets get energy from … (a) sunlight (solar panels) (b) petrol pumps (c) wind-up keys (d) shop batteries
  16. 16.🔋 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%?
  17. 17.🔋 A robot’s battery is at 50% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  18. 18.🔋 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%?
  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’s battery holds 1500 mAh and the robot uses 250 mA. For how many hours can it run?
  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’s battery holds 2000 mAh and the robot uses 250 mA. For how many hours can it run?
  23. 23.🔋 A robot’s battery holds 3000 mAh and the robot uses 500 mA. For how many hours can it run?
  24. 24.🔋 A robot’s battery holds 1000 mAh and the robot uses 200 mA. For how many hours can it run?
  25. 25.🔋 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%?
  26. 26.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  27. 27.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  28. 28.🔋 A robot’s battery holds 6000 mAh and the robot uses 1000 mA. For how many hours can it run?
  29. 29.🔋 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%?
  30. 30.🔋 A robot’s battery holds 500 mAh and the robot uses 250 mA. For how many hours can it run?
  31. 31.🔋 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%?
  32. 32.🔋 A robot uses 2% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  33. 33.🔋 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%?
  34. 34.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  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 runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  37. 37.🔋 A robot’s battery is at 25% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  38. 38.🔋 A robot’s battery holds 1500 mAh and the robot uses 500 mA. For how many hours can it run?
  39. 39.🔋 A robot’s battery holds 500 mAh and the robot uses 500 mA. For how many hours can it run?
  40. 40.🔋 A robot’s battery is at 100%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?

Answer key

  1. 5
  2. 7
  3. 4
  4. mAh
  5. 7.5
  6. goes back to its dock
  7. a rechargeable battery
  8. 10
  9. 2
  10. 50
  11. 100
  12. give it to an adult
  13. 150
  14. 9
  15. sunlight (solar panels)
  16. 4
  17. 100
  18. 13
  19. 3
  20. 6
  21. 2
  22. 8
  23. 6
  24. 5
  25. 3
  26. 12
  27. 4.5
  28. 6
  29. 2
  30. 2
  31. 15
  32. 250
  33. 3
  34. 6
  35. 4
  36. 10.5
  37. 150
  38. 3
  39. 1
  40. 20

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