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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 58 · 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 arm bolted to a factory floor usually gets its power from … (a) a wind-up key (b) a coin cell (c) a power cable (d) a solar panel
  2. 2.🔋 What should you do with a swollen or damaged robot battery? (a) charge it again (b) throw it in a fire (c) give it to an adult (d) squeeze it flat
  3. 3.🔋 A robot’s battery is at 25% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  4. 4.🔋 A robot’s battery is at 15% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  5. 5.🔋 Battery capacity (how much it holds) is often written in … (a) °C (b) mAh (c) kg (d) km
  6. 6.🔋 A robot’s battery holds 3500 mAh and the robot uses 500 mA. For how many hours can it run?
  7. 7.🔋 Many robots on far-away planets get energy from … (a) shop batteries (b) petrol pumps (c) sunlight (solar panels) (d) wind-up keys
  8. 8.🔋 A robot’s battery is at 30% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  9. 9.🔋 A robot’s battery holds 1400 mAh and the robot uses 200 mA. For how many hours can it run?
  10. 10.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  11. 11.🔋 A robot’s battery holds 800 mAh and the robot uses 100 mA. For how many hours can it run?
  12. 12.🔋 A robot’s battery is at 35% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  13. 13.🔋 A robot uses 4% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  14. 14.🔋 A robot’s battery holds 2500 mAh and the robot uses 500 mA. For how many hours can it run?
  15. 15.🔋 A robot’s battery is at 0% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  16. 16.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  17. 17.🔋 A robot uses 5% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  18. 18.🔋 A robot’s battery is at 25% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  19. 19.🔋 A robot’s battery is at 15%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  20. 20.🔋 A robot’s battery is at 60% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  21. 21.🔋 A robot’s battery holds 3000 mAh and the robot uses 1000 mA. For how many hours can it run?
  22. 22.🔋 A robot’s battery is at 5% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  23. 23.🔋 A robot’s battery holds 500 mAh and the robot uses 500 mA. For how many hours can it run?
  24. 24.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  25. 25.🔋 A robot uses 5% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  26. 26.🔋 A robot’s battery is at 90%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  27. 27.🔋 A robot uses 2% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  28. 28.🔋 A robot uses 2% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  29. 29.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  30. 30.🔋 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%?
  31. 31.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  32. 32.🔋 A robot’s battery holds 1500 mAh and the robot uses 500 mA. For how many hours can it run?
  33. 33.🔋 A robot uses 25% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  34. 34.🔋 A robot’s battery holds 1250 mAh and the robot uses 250 mA. For how many hours can it run?
  35. 35.🔋 A robot uses 10% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  36. 36.🔋 A robot uses 25% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  37. 37.🔋 A robot uses 4% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  38. 38.🔋 A robot’s battery is at 40% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  39. 39.🔋 A robot’s battery holds 600 mAh and the robot uses 200 mA. For how many hours can it run?
  40. 40.🔋 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%?

Answer key

  1. a power cable
  2. give it to an adult
  3. 30
  4. 170
  5. mAh
  6. 7
  7. sunlight (solar panels)
  8. 140
  9. 7
  10. 4.5
  11. 8
  12. 130
  13. 25
  14. 5
  15. 100
  16. 7.5
  17. 60
  18. 150
  19. 3
  20. 80
  21. 3
  22. 190
  23. 1
  24. 12
  25. 120
  26. 18
  27. 200
  28. 100
  29. 9
  30. 5
  31. 6
  32. 3
  33. 4
  34. 5
  35. 40
  36. 24
  37. 100
  38. 30
  39. 3
  40. 3

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