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Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 208 · 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 55% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  2. 2.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  3. 3.🔋 A robot’s battery holds 1500 mAh and the robot uses 500 mA. For how many hours can it run?
  4. 4.🔋 A robot’s battery holds 250 mAh and the robot uses 250 mA. For how many hours can it run?
  5. 5.🔋 A robot’s battery holds 3200 mAh and the robot uses 400 mA. For how many hours can it run?
  6. 6.🔋 A robot’s battery is at 75% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  7. 7.🔋 A robot’s battery is at 10% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  8. 8.🔋 What powers most moving robots? (a) a candle (b) a tiny magnet (c) a rechargeable battery (d) a water tank
  9. 9.🔋 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%?
  10. 10.🔋 What should you do with a swollen or damaged robot battery? (a) squeeze it flat (b) throw it in a fire (c) charge it again (d) give it to an adult
  11. 11.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a wind-up key (b) a solar panel (c) a coin cell (d) a power cable
  12. 12.🔋 A robot’s battery holds 800 mAh and the robot uses 200 mA. For how many hours can it run?
  13. 13.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  14. 14.🔋 A robot’s battery holds 3500 mAh and the robot uses 500 mA. For how many hours can it run?
  15. 15.🔋 Battery capacity (how much it holds) is often written in … (a) °C (b) km (c) mAh (d) kg
  16. 16.🔋 A robot’s battery holds 1250 mAh and the robot uses 250 mA. For how many hours can it run?
  17. 17.🔋 A robot’s battery is at 25% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  18. 18.🔋 A robot uses 4% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  19. 19.🔋 A robot uses 10% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  20. 20.🔋 A robot uses 2% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  21. 21.🔋 A robot’s battery holds 1600 mAh and the robot uses 200 mA. For how many hours can it run?
  22. 22.🔋 A robot’s battery is at 85% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  23. 23.🔋 A robot’s battery is at 50% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  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 20% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  26. 26.🔋 A robot uses 4% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  27. 27.🔋 Many robots on far-away planets get energy from … (a) petrol pumps (b) wind-up keys (c) shop batteries (d) sunlight (solar panels)
  28. 28.🔋 A robot uses 4% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  29. 29.🔋 A robot’s battery holds 500 mAh and the robot uses 500 mA. For how many hours can it run?
  30. 30.🔋 A robot’s battery holds 200 mAh and the robot uses 200 mA. For how many hours can it run?
  31. 31.🔋 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%?
  32. 32.🔋 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%?
  33. 33.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  34. 34.🔋 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%?
  35. 35.🔋 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%?
  36. 36.🔋 A robot’s battery is at 10% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  37. 37.🔋 A robot’s battery holds 5000 mAh and the robot uses 1000 mA. For how many hours can it run?
  38. 38.🔋 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%?
  39. 39.🔋 A robot’s battery is at 50%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  40. 40.🔋 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%?

Answer key

  1. 90
  2. 3
  3. 3
  4. 1
  5. 8
  6. 10
  7. 90
  8. a rechargeable battery
  9. 4
  10. give it to an adult
  11. a power cable
  12. 4
  13. 10.5
  14. 7
  15. mAh
  16. 5
  17. 150
  18. 50
  19. 60
  20. 300
  21. 8
  22. 30
  23. 100
  24. 12
  25. 15
  26. 25
  27. sunlight (solar panels)
  28. 125
  29. 1
  30. 1
  31. 3
  32. 3
  33. 4.5
  34. 3
  35. 2
  36. 180
  37. 5
  38. 8
  39. 5
  40. 18

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