← Power for robots lesson New set →

Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 376 · 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.🔋 Battery capacity (how much it holds) is often written in … (a) mAh (b) kg (c) °C (d) km
  2. 2.🔋 A robot runs on 6 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  3. 3.🔋 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%?
  4. 4.🔋 A robot’s battery is at 75% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  5. 5.🔋 A robot’s battery is at 20% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  6. 6.🔋 A robot’s battery holds 500 mAh and the robot uses 500 mA. For how many hours can it run?
  7. 7.🔋 A robot’s battery holds 200 mAh and the robot uses 100 mA. For how many hours can it run?
  8. 8.🔋 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%?
  9. 9.🔋 A robot’s battery is at 70% and charging adds 10% every 10 minutes. How many minutes until it is full (100%)?
  10. 10.🔋 A robot’s battery is at 80%. Each lap of the track uses 20%. How many laps can it do before the battery reaches 0%?
  11. 11.🔋 Many robots on far-away planets get energy from … (a) petrol pumps (b) wind-up keys (c) shop batteries (d) sunlight (solar panels)
  12. 12.🔋 A robot’s battery holds 1200 mAh and the robot uses 200 mA. For how many hours can it run?
  13. 13.🔋 A robot’s battery holds 750 mAh and the robot uses 250 mA. For how many hours can it run?
  14. 14.🔋 A robot’s battery holds 7000 mAh and the robot uses 1000 mA. For how many hours can it run?
  15. 15.🔋 A robot uses 25% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  16. 16.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  17. 17.🔋 A robot’s battery holds 2800 mAh and the robot uses 400 mA. For how many hours can it run?
  18. 18.🔋 A robot’s battery holds 800 mAh and the robot uses 200 mA. For how many hours can it run?
  19. 19.🔋 A robot’s battery is at 20% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  20. 20.🔋 A robot’s battery holds 200 mAh and the robot uses 200 mA. For how many hours can it run?
  21. 21.🔋 A robot’s battery is at 60% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  22. 22.🔋 A robot’s battery is at 0% and charging adds 20% every 10 minutes. How many minutes until it is full (100%)?
  23. 23.🔋 A robot uses 20% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  24. 24.🔋 A robot uses 25% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  25. 25.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  26. 26.🔋 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%?
  27. 27.🔋 A robot’s battery is at 50% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  28. 28.🔋 A robot’s battery holds 400 mAh and the robot uses 200 mA. For how many hours can it run?
  29. 29.🔋 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%?
  30. 30.🔋 A robot’s battery holds 500 mAh and the robot uses 100 mA. For how many hours can it run?
  31. 31.🔋 What should you do with a swollen or damaged robot battery? (a) squeeze it flat (b) give it to an adult (c) throw it in a fire (d) charge it again
  32. 32.🔋 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%?
  33. 33.🔋 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
  34. 34.🔋 A robot uses 4% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  35. 35.🔋 A robot uses 4% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  36. 36.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  37. 37.🔋 A robot uses 2% of its battery every 1 minute. How many minutes does a full battery (100%) last?
  38. 38.🔋 A robot uses 2% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  39. 39.🔋 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%?
  40. 40.🔋 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%?

Answer key

  1. mAh
  2. 9
  3. 2
  4. 10
  5. 40
  6. 1
  7. 2
  8. 8
  9. 30
  10. 4
  11. sunlight (solar panels)
  12. 6
  13. 3
  14. 7
  15. 4
  16. 10.5
  17. 7
  18. 4
  19. 160
  20. 1
  21. 20
  22. 50
  23. 30
  24. 8
  25. 7.5
  26. 3
  27. 100
  28. 2
  29. 7
  30. 5
  31. give it to an adult
  32. 16
  33. a power cable
  34. 50
  35. 125
  36. 4.5
  37. 50
  38. 250
  39. 2
  40. 3

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