← Power for robots lesson New set →

Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 130 · 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 2% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  2. 2.🔋 A robot’s battery is at 0% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  3. 3.🔋 Many robots on far-away planets get energy from … (a) sunlight (solar panels) (b) petrol pumps (c) shop batteries (d) wind-up keys
  4. 4.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  5. 5.🔋 A robot’s battery is at 60% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  6. 6.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  7. 7.🔋 A robot’s battery is at 80% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  8. 8.🔋 A robot’s battery holds 100 mAh and the robot uses 100 mA. For how many hours can it run?
  9. 9.🔋 A robot uses 10% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  10. 10.🔋 A robot uses 5% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  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 runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  13. 13.🔋 A robot’s battery is at 55% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  14. 14.🔋 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%?
  15. 15.🔋 A robot uses 2% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  16. 16.🔋 A robot uses 5% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  17. 17.🔋 Battery capacity (how much it holds) is often written in … (a) km (b) mAh (c) °C (d) kg
  18. 18.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  19. 19.🔋 A robot uses 2% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  20. 20.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a coin cell (b) a solar panel (c) a power cable (d) a wind-up key
  21. 21.🔋 A robot uses 20% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  22. 22.🔋 A robot’s battery is at 80% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  23. 23.🔋 A robot’s battery holds 200 mAh and the robot uses 200 mA. For how many hours can it run?
  24. 24.🔋 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%?
  25. 25.🔋 A robot’s battery holds 8000 mAh and the robot uses 1000 mA. For how many hours can it run?
  26. 26.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  27. 27.🔋 A robot’s battery holds 2000 mAh and the robot uses 500 mA. For how many hours can it run?
  28. 28.🔋 A robot’s battery is at 50%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  29. 29.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  30. 30.🔋 A robot’s battery holds 400 mAh and the robot uses 100 mA. For how many hours can it run?
  31. 31.🔋 A robot’s battery is at 0% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  32. 32.🔋 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%?
  33. 33.🔋 A robot’s battery holds 1200 mAh and the robot uses 200 mA. For how many hours can it run?
  34. 34.🔋 A robot’s battery holds 1200 mAh and the robot uses 400 mA. For how many hours can it run?
  35. 35.🔋 What should you do with a swollen or damaged robot battery? (a) throw it in a fire (b) squeeze it flat (c) give it to an adult (d) charge it again
  36. 36.🔋 A robot’s battery is at 20% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  37. 37.🔋 A robot’s battery is at 90%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  38. 38.🔋 A robot’s battery is at 35%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  39. 39.🔋 A robot uses 2% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  40. 40.🔋 What powers most moving robots? (a) a candle (b) a rechargeable battery (c) a tiny magnet (d) a water tank

Answer key

  1. 150
  2. 50
  3. sunlight (solar panels)
  4. 6
  5. 40
  6. 7.5
  7. 10
  8. 1
  9. 50
  10. 40
  11. 20
  12. 4.5
  13. 90
  14. 3
  15. 250
  16. 120
  17. mAh
  18. 12
  19. 300
  20. a power cable
  21. 20
  22. 20
  23. 1
  24. 2
  25. 8
  26. 9
  27. 4
  28. 10
  29. 10.5
  30. 4
  31. 100
  32. 5
  33. 6
  34. 3
  35. give it to an adult
  36. 40
  37. 9
  38. 7
  39. 100
  40. a rechargeable battery

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