← Power for robots lesson New set →

Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 286 · 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 10% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  2. 2.🔋 A robot’s battery is at 40%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  3. 3.🔋 A robot uses 4% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  4. 4.🔋 A robot’s battery is at 20% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  5. 5.🔋 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%?
  6. 6.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  7. 7.🔋 A robot’s battery is at 20% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  8. 8.🔋 A robot’s battery is at 40% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  9. 9.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a coin cell (b) a power cable (c) a wind-up key (d) a solar panel
  10. 10.🔋 A robot’s battery is at 40% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  11. 11.🔋 A robot’s battery is at 50% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  12. 12.🔋 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%?
  13. 13.🔋 A robot’s battery is at 0% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  14. 14.🔋 A robot’s battery is at 45% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  15. 15.🔋 Many robots on far-away planets get energy from … (a) sunlight (solar panels) (b) wind-up keys (c) petrol pumps (d) shop batteries
  16. 16.🔋 A robot’s battery holds 1600 mAh and the robot uses 400 mA. For how many hours can it run?
  17. 17.🔋 A robot uses 2% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  18. 18.🔋 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%?
  19. 19.🔋 What powers most moving robots? (a) a water tank (b) a tiny magnet (c) a rechargeable battery (d) a candle
  20. 20.🔋 A robot’s battery holds 300 mAh and the robot uses 100 mA. For how many hours can it run?
  21. 21.🔋 A robot’s battery is at 95%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  22. 22.🔋 A robot’s battery holds 1000 mAh and the robot uses 1000 mA. For how many hours can it run?
  23. 23.🔋 A robot’s battery holds 1200 mAh and the robot uses 400 mA. For how many hours can it run?
  24. 24.🔋 A robot’s battery is at 70%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  25. 25.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  26. 26.🔋 A robot’s battery is at 80%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  27. 27.🔋 A robot uses 10% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  28. 28.🔋 A robot’s battery is at 20%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  29. 29.🔋 A robot’s battery holds 2000 mAh and the robot uses 500 mA. For how many hours can it run?
  30. 30.🔋 A robot’s battery is at 10% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  31. 31.🔋 What should you do with a swollen or damaged robot battery? (a) charge it again (b) squeeze it flat (c) give it to an adult (d) throw it in a fire
  32. 32.🔋 A robot’s battery is at 70% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  33. 33.🔋 A robot uses 5% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  34. 34.🔋 A robot’s battery holds 250 mAh and the robot uses 250 mA. For how many hours can it run?
  35. 35.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  36. 36.🔋 A robot’s battery is at 30%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  37. 37.🔋 A robot’s battery is at 50% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  38. 38.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  39. 39.🔋 A robot uses 5% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  40. 40.🔋 A robot’s battery holds 800 mAh and the robot uses 400 mA. For how many hours can it run?

Answer key

  1. 10
  2. 4
  3. 150
  4. 160
  5. 2
  6. 4.5
  7. 40
  8. 30
  9. a power cable
  10. 60
  11. 20
  12. 2
  13. 100
  14. 110
  15. sunlight (solar panels)
  16. 4
  17. 50
  18. 4
  19. a rechargeable battery
  20. 3
  21. 19
  22. 1
  23. 3
  24. 7
  25. 3
  26. 16
  27. 30
  28. 2
  29. 4
  30. 180
  31. give it to an adult
  32. 30
  33. 40
  34. 1
  35. 7.5
  36. 3
  37. 50
  38. 10.5
  39. 80
  40. 2

Free robotics lessons, practice and worksheets at talentjr.in/robotics-for-kids