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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 14 · 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 uses 4% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  2. 2.🔋 What should you do with a swollen or damaged robot battery? (a) charge it again (b) give it to an adult (c) squeeze it flat (d) throw it in a fire
  3. 3.🔋 A robot uses 4% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  4. 4.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a solar panel (b) a wind-up key (c) a power cable (d) a coin cell
  5. 5.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  6. 6.🔋 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%?
  7. 7.🔋 A robot’s battery is at 30% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  8. 8.🔋 A robot’s battery is at 25% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  9. 9.🔋 A robot’s battery holds 2000 mAh and the robot uses 1000 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.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  12. 12.🔋 A robot’s battery is at 50% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  13. 13.🔋 A robot’s battery holds 2000 mAh and the robot uses 400 mA. For how many hours can it run?
  14. 14.🔋 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%?
  15. 15.🔋 A robot’s battery is at 40%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  16. 16.🔋 A robot’s battery holds 6000 mAh and the robot uses 1000 mA. For how many hours can it run?
  17. 17.🔋 A robot’s battery is at 40% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  18. 18.🔋 A robot’s battery holds 8000 mAh and the robot uses 1000 mA. For how many hours can it run?
  19. 19.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  20. 20.🔋 What powers most moving robots? (a) a tiny magnet (b) a water tank (c) a candle (d) a rechargeable battery
  21. 21.🔋 A robot’s battery holds 1000 mAh and the robot uses 1000 mA. For how many hours can it run?
  22. 22.🔋 A robot uses 4% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  23. 23.🔋 A robot’s battery holds 250 mAh and the robot uses 250 mA. For how many hours can it run?
  24. 24.🔋 A robot’s battery is at 90% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  25. 25.🔋 Many robots on far-away planets get energy from … (a) petrol pumps (b) wind-up keys (c) shop batteries (d) sunlight (solar panels)
  26. 26.🔋 A robot’s battery holds 2000 mAh and the robot uses 250 mA. For how many hours can it run?
  27. 27.🔋 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%?
  28. 28.🔋 A robot’s battery is at 85% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  29. 29.🔋 A robot uses 2% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  30. 30.🔋 A robot’s battery is at 60% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  31. 31.🔋 A robot uses 5% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  32. 32.🔋 A robot’s battery holds 100 mAh and the robot uses 100 mA. For how many hours can it run?
  33. 33.🔋 A robot’s battery holds 3200 mAh and the robot uses 400 mA. For how many hours can it run?
  34. 34.🔋 A robot’s battery holds 500 mAh and the robot uses 500 mA. For how many hours can it run?
  35. 35.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  36. 36.🔋 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%?
  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 runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  39. 39.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  40. 40.🔋 Battery capacity (how much it holds) is often written in … (a) km (b) mAh (c) °C (d) kg

Answer key

  1. 75
  2. give it to an adult
  3. 100
  4. a power cable
  5. 4.5
  6. 4
  7. 70
  8. 30
  9. 2
  10. 7
  11. 7.5
  12. 50
  13. 5
  14. 20
  15. 8
  16. 6
  17. 30
  18. 8
  19. 12
  20. a rechargeable battery
  21. 1
  22. 125
  23. 1
  24. 20
  25. sunlight (solar panels)
  26. 8
  27. 2
  28. 30
  29. 300
  30. 40
  31. 20
  32. 1
  33. 8
  34. 1
  35. 6
  36. 3
  37. 150
  38. 9
  39. 10.5
  40. mAh

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