Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 9 · 40 questions

Remember (Push, flow, resist): Voltage → volts (V), current → amperes (A), resistance → ohms (Ω), power → watts (W). milli (m) = ÷ 1000 and kilo (k) = × 1000: 250 mA = 0.25 A, 2.2 kΩ = 2200 Ω. Voltmeter across a part; ammeter in series.

1. 1.📏 How many amperes (A) is 1280 mA? =
2. 2.Which of these is measured in watts (W)? (a) how much a part resists (b) resistance (c) power (d) current
3. 3.📏 How many watts (W) is 4.5 kW?
4. 4.📏 Which unit measures voltage? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
5. 5.📏 Which unit measures the push of a cell? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
6. 6.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water pressure (c) the water tank lid (d) the tap handle
7. 7.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) current (c) energy used each second (d) power
8. 8.📏 Which unit measures current? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
9. 9.📏 How many kilo-ohms (kΩ) is 1200 Ω? =
10. 10.True or false: current is measured in volts (V). (a) True (b) False
11. 11.📏 Which unit measures power? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
12. 12.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 1024 (c) 100 (d) 10
13. 13.📏 How many amperes (A) is 1970 mA? =
14. 14.True or false: the ammeter is joined across a part. (a) False (b) True
15. 15.True or false: the voltmeter is joined in series. (a) False (b) True
16. 16.True or false: power is measured in volts (V). (a) False (b) True
17. 17.📏 Which unit measures the flow of charge? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
18. 18.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) energy used each second (c) power (d) resistance
19. 19.📏 Which unit measures how much a part resists? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
20. 20.True or false: the ammeter is joined in series. (a) False (b) True
21. 21.📏 How many kilowatts (kW) is 3650 W? =
22. 22.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
23. 23.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the water pressure (c) the pipe colour (d) the flow of water
24. 24.📏 How many kilo-ohms (kΩ) is 9000 Ω? =
25. 25.Which of these is measured in volts (V)? (a) how much a part resists (b) the flow of charge (c) resistance (d) voltage
26. 26.📏 How many ohms (Ω) is 8.6 kΩ?
27. 27.True or false: the voltmeter is joined across a part. (a) False (b) True
28. 28.📏 How many ohms (Ω) is 9.1 kΩ?
29. 29.True or false: current is measured in amperes (A). (a) True (b) False
30. 30.📏 How many amperes (A) is 290 mA? =
31. 31.True or false: current is measured in ohms (Ω). (a) True (b) False
32. 32.📏 How many milliamperes (mA) is 1.65 A?
33. 33.True or false: the push of a cell is measured in volts (V). (a) False (b) True
34. 34.📏 How many watts (W) is 1.4 kW?
35. 35.Which of these is measured in watts (W)? (a) voltage (b) the flow of charge (c) current (d) energy used each second
36. 36.📏 How many ohms (Ω) is 4.7 kΩ?
37. 37.📏 How many milliamperes (mA) is 0.32 A?
38. 38.📏 How many kilowatts (kW) is 1800 W? =
39. 39.📏 How many milliamperes (mA) is 0.46 A?
40. 40.True or false: voltage is measured in ohms (Ω). (a) False (b) True

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