← Power for robots lesson New set →

Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 588 · 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 30% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  2. 2.🔋 A robot’s battery is at 45% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  3. 3.🔋 What powers most moving robots? (a) a water tank (b) a rechargeable battery (c) a candle (d) a tiny magnet
  4. 4.🔋 A robot’s battery is at 5% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  5. 5.🔋 A robot’s battery is at 0% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  6. 6.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  7. 7.🔋 A robot’s battery holds 1600 mAh and the robot uses 400 mA. For how many hours can it run?
  8. 8.🔋 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%?
  9. 9.🔋 A robot uses 4% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  10. 10.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a coin cell (b) a wind-up key (c) a solar panel (d) a power cable
  11. 11.🔋 A robot’s battery is at 85% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  12. 12.🔋 Many robots on far-away planets get energy from … (a) wind-up keys (b) shop batteries (c) sunlight (solar panels) (d) petrol pumps
  13. 13.🔋 A robot’s battery holds 2400 mAh and the robot uses 400 mA. For how many hours can it run?
  14. 14.🔋 A robot’s battery is at 0% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  15. 15.🔋 A robot uses 5% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  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 runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  18. 18.🔋 A robot uses 2% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  19. 19.🔋 A robot uses 25% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  20. 20.🔋 Battery capacity (how much it holds) is often written in … (a) km (b) °C (c) kg (d) mAh
  21. 21.🔋 What should you do with a swollen or damaged robot battery? (a) charge it again (b) squeeze it flat (c) throw it in a fire (d) give it to an adult
  22. 22.🔋 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%?
  23. 23.🔋 A robot uses 2% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  24. 24.🔋 A robot’s battery holds 1200 mAh and the robot uses 400 mA. For how many hours can it run?
  25. 25.🔋 A robot’s battery holds 2000 mAh and the robot uses 1000 mA. For how many hours can it run?
  26. 26.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  27. 27.🔋 A robot’s battery is at 70%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  28. 28.🔋 What does a robot vacuum do when its battery is low? (a) turns into a car (b) explodes (c) goes back to its dock (d) keeps going for ever
  29. 29.🔋 A robot runs on 4 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  30. 30.🔋 A robot’s battery is at 40% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  31. 31.🔋 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%?
  32. 32.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  33. 33.🔋 A robot’s battery holds 100 mAh and the robot uses 100 mA. For how many hours can it run?
  34. 34.🔋 A robot uses 10% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  35. 35.🔋 A robot’s battery is at 20% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  36. 36.🔋 A robot uses 4% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  37. 37.🔋 A robot’s battery holds 700 mAh and the robot uses 100 mA. For how many hours can it run?
  38. 38.🔋 A robot’s battery is at 50% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  39. 39.🔋 A robot uses 25% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  40. 40.🔋 A robot’s battery holds 1500 mAh and the robot uses 250 mA. For how many hours can it run?

Answer key

  1. 140
  2. 110
  3. a rechargeable battery
  4. 190
  5. 40
  6. 9
  7. 4
  8. 2
  9. 150
  10. a power cable
  11. 30
  12. sunlight (solar panels)
  13. 6
  14. 200
  15. 100
  16. 7.5
  17. 4.5
  18. 150
  19. 4
  20. mAh
  21. give it to an adult
  22. 10
  23. 200
  24. 3
  25. 2
  26. 10.5
  27. 14
  28. goes back to its dock
  29. 6
  30. 60
  31. 2
  32. 3
  33. 1
  34. 50
  35. 160
  36. 125
  37. 7
  38. 20
  39. 16
  40. 6

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