← Power for robots lesson New set →

Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 512 · 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 holds 600 mAh and the robot uses 100 mA. For how many hours can it run?
  2. 2.🔋 A robot’s battery is at 20% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  3. 3.🔋 What should you do with a swollen or damaged robot battery? (a) throw it in a fire (b) give it to an adult (c) charge it again (d) squeeze it flat
  4. 4.🔋 A robot uses 20% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  5. 5.🔋 A robot’s battery holds 1500 mAh and the robot uses 250 mA. For how many hours can it run?
  6. 6.🔋 A robot’s battery is at 60%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  7. 7.🔋 A robot’s battery is at 20%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  8. 8.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  9. 9.🔋 A robot’s battery is at 75% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  10. 10.🔋 What powers most moving robots? (a) a tiny magnet (b) a water tank (c) a rechargeable battery (d) a candle
  11. 11.🔋 A robot’s battery holds 400 mAh and the robot uses 400 mA. For how many hours can it run?
  12. 12.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  13. 13.🔋 What does a robot vacuum do when its battery is low? (a) explodes (b) keeps going for ever (c) turns into a car (d) goes back to its dock
  14. 14.🔋 A robot’s battery holds 3200 mAh and the robot uses 400 mA. For how many hours can it run?
  15. 15.🔋 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%?
  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’s battery holds 800 mAh and the robot uses 100 mA. For how many hours can it run?
  18. 18.🔋 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%?
  19. 19.🔋 A robot’s battery holds 1200 mAh and the robot uses 200 mA. For how many hours can it run?
  20. 20.🔋 A robot’s battery holds 1600 mAh and the robot uses 200 mA. For how many hours can it run?
  21. 21.🔋 A robot’s battery holds 250 mAh and the robot uses 250 mA. For how many hours can it run?
  22. 22.🔋 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%?
  23. 23.🔋 A robot’s battery holds 400 mAh and the robot uses 200 mA. For how many hours can it run?
  24. 24.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  25. 25.🔋 A robot’s battery holds 1750 mAh and the robot uses 250 mA. For how many hours can it run?
  26. 26.🔋 A robot’s battery is at 85% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  27. 27.🔋 Battery capacity (how much it holds) is often written in … (a) km (b) kg (c) °C (d) mAh
  28. 28.🔋 A robot’s battery is at 60%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  29. 29.🔋 A robot’s battery is at 10%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  30. 30.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  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 is at 25% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  33. 33.🔋 A robot’s battery is at 75% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  34. 34.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  35. 35.🔋 A robot uses 20% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  36. 36.🔋 A robot’s battery is at 0% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  37. 37.🔋 A robot’s battery is at 40%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  38. 38.🔋 A robot’s battery holds 6000 mAh and the robot uses 1000 mA. For how many hours can it run?
  39. 39.🔋 Many robots on far-away planets get energy from … (a) wind-up keys (b) shop batteries (c) sunlight (solar panels) (d) petrol pumps
  40. 40.🔋 A robot uses 2% of its battery every 2 minutes. How many minutes does a full battery (100%) last?

Answer key

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

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