Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 102 · 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 kilo-ohms (kΩ) is 8400 Ω? =
2. 2.True or false: how much a part resists is measured in volts (V). (a) True (b) False
3. 3.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
4. 4.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 60 (c) 10 (d) 1000
5. 5.📏 How many amperes (A) is 730 mA? =
6. 6.Which of these is measured in watts (W)? (a) resistance (b) voltage (c) how much a part resists (d) energy used each second
7. 7.📏 How many milliamperes (mA) is 0.2 A?
8. 8.📏 How many amperes (A) is 1740 mA? =
9. 9.📏 Which unit measures the push of a cell? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
10. 10.📏 Which unit measures the flow of charge? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
11. 11.📏 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
12. 12.True or false: the voltmeter is joined across a part. (a) True (b) False
13. 13.📏 Which unit measures voltage? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
14. 14.📏 How many ohms (Ω) is 4 kΩ?
15. 15.True or false: energy used each second is measured in watts (W). (a) False (b) True
16. 16.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
17. 17.📏 How many milliamperes (mA) is 2.92 A?
18. 18.True or false: the voltmeter is joined in series. (a) True (b) False
19. 19.Which of these is measured in amperes (A)? (a) power (b) energy used each second (c) the push of a cell (d) current
20. 20.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the pipe colour (c) the flow of water (d) a narrow pipe
21. 21.📏 How many kilowatts (kW) is 300 W? =
22. 22.True or false: the ammeter is joined across a part. (a) False (b) True
23. 23.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) the flow of charge (c) the push of a cell (d) current
24. 24.True or false: the ammeter is joined in series. (a) False (b) True
25. 25.📏 How many ohms (Ω) is 4.1 kΩ?
26. 26.Which of these is measured in volts (V)? (a) the push of a cell (b) current (c) the flow of charge (d) energy used each second
27. 27.📏 How many kilowatts (kW) is 200 W? =
28. 28.📏 How many kilo-ohms (kΩ) is 300 Ω? =
29. 29.Which of these is measured in amperes (A)? (a) how much a part resists (b) energy used each second (c) resistance (d) the flow of charge
30. 30.📏 Which unit measures power? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
31. 31.True or false: the ammeter measures voltage. (a) True (b) False
32. 32.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
33. 33.📏 How many ohms (Ω) is 6.8 kΩ?
34. 34.True or false: voltage is measured in watts (W). (a) False (b) True
35. 35.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
36. 36.📏 How many watts (W) is 3.1 kW?
37. 37.📏 How many kilo-ohms (kΩ) is 8200 Ω? =
38. 38.📏 Which unit measures energy used each second? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
39. 39.True or false: the voltmeter measures voltage. (a) True (b) False
40. 40.Which of these is measured in ohms (Ω)? (a) current (b) resistance (c) power (d) energy used each second

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