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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 270 · 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 80%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  2. 2.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a solar panel (b) a power cable (c) a wind-up key (d) a coin cell
  3. 3.🔋 A robot uses 25% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  4. 4.🔋 A robot’s battery holds 2400 mAh and the robot uses 400 mA. For how many hours can it run?
  5. 5.🔋 A robot’s battery is at 20% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  6. 6.🔋 A robot’s battery is at 80% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  7. 7.🔋 A robot’s battery holds 1500 mAh and the robot uses 250 mA. For how many hours can it run?
  8. 8.🔋 Many robots on far-away planets get energy from … (a) wind-up keys (b) petrol pumps (c) sunlight (solar panels) (d) shop batteries
  9. 9.🔋 A robot’s battery is at 15% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  10. 10.🔋 What should you do with a swollen or damaged robot battery? (a) give it to an adult (b) throw it in a fire (c) squeeze it flat (d) charge it again
  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 0% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  13. 13.🔋 A robot uses 10% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  14. 14.🔋 Battery capacity (how much it holds) is often written in … (a) kg (b) °C (c) km (d) mAh
  15. 15.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  16. 16.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  17. 17.🔋 A robot uses 25% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  18. 18.🔋 A robot’s battery is at 25%. 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 500 mAh and the robot uses 500 mA. For how many hours can it run?
  21. 21.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  22. 22.🔋 A robot’s battery holds 600 mAh and the robot uses 100 mA. For how many hours can it run?
  23. 23.🔋 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%?
  24. 24.🔋 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%?
  25. 25.🔋 A robot’s battery holds 3200 mAh and the robot uses 400 mA. For how many hours can it run?
  26. 26.🔋 A robot’s battery holds 1000 mAh and the robot uses 250 mA. For how many hours can it run?
  27. 27.🔋 A robot uses 20% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  28. 28.🔋 A robot uses 5% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  29. 29.🔋 What powers most moving robots? (a) a rechargeable battery (b) a tiny magnet (c) a water tank (d) a candle
  30. 30.🔋 A robot’s battery holds 200 mAh and the robot uses 100 mA. For how many hours can it run?
  31. 31.🔋 A robot’s battery is at 90% 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 1 minute. How many minutes does a full battery (100%) last?
  33. 33.🔋 A robot’s battery is at 0% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  34. 34.🔋 A robot’s battery holds 1750 mAh and the robot uses 250 mA. For how many hours can it run?
  35. 35.🔋 A robot uses 2% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  36. 36.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  37. 37.🔋 A robot’s battery is at 80% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  38. 38.🔋 A robot’s battery holds 6000 mAh and the robot uses 1000 mA. For how many hours can it run?
  39. 39.🔋 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%?
  40. 40.🔋 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%?

Answer key

  1. 8
  2. a power cable
  3. 4
  4. 6
  5. 40
  6. 10
  7. 6
  8. sunlight (solar panels)
  9. 170
  10. give it to an adult
  11. 6
  12. 40
  13. 50
  14. mAh
  15. 7.5
  16. 12
  17. 20
  18. 5
  19. 3
  20. 1
  21. 10.5
  22. 6
  23. 4
  24. 17
  25. 8
  26. 4
  27. 25
  28. 20
  29. a rechargeable battery
  30. 2
  31. 20
  32. 10
  33. 100
  34. 7
  35. 50
  36. 4.5
  37. 20
  38. 6
  39. 4
  40. 2

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