Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 976 · 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 milliamperes (mA) make 1 ampere? (a) 60 (b) 1000 (c) 10 (d) 100
2. 2.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
3. 3.True or false: resistance is measured in volts (V). (a) True (b) False
4. 4.📏 How many kilo-ohms (kΩ) is 600 Ω? =
5. 5.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) current (c) the flow of charge (d) the push of a cell
6. 6.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
7. 7.📏 How many kilowatts (kW) is 4600 W? =
8. 8.True or false: the voltmeter measures voltage. (a) True (b) False
9. 9.True or false: voltage is measured in amperes (A). (a) True (b) False
10. 10.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) a narrow pipe (c) the pipe colour (d) the flow of water
11. 11.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
12. 12.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water pressure (c) the pipe colour (d) the water tank lid
13. 13.📏 Which unit measures the flow of charge? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
14. 14.📏 How many amperes (A) is 580 mA? =
15. 15.📏 Which unit measures the push of a cell? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
16. 16.📏 How many milliamperes (mA) is 0.02 A?
17. 17.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) resistance (c) energy used each second (d) voltage
18. 18.📏 How many ohms (Ω) is 0.7 kΩ?
19. 19.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
20. 20.True or false: energy used each second is measured in ohms (Ω). (a) False (b) True
21. 21.📏 Which unit measures resistance? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
22. 22.📏 How many ohms (Ω) is 3.7 kΩ?
23. 23.📏 How many kilo-ohms (kΩ) is 800 Ω? =
24. 24.True or false: the ammeter is joined across a part. (a) True (b) False
25. 25.📏 Which unit measures power? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
26. 26.True or false: energy used each second is measured in watts (W). (a) False (b) True
27. 27.📏 How many milliamperes (mA) is 0.5 A?
28. 28.📏 How many amperes (A) is 530 mA? =
29. 29.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
30. 30.True or false: the ammeter measures voltage. (a) False (b) True
31. 31.📏 How many watts (W) is 0.5 kW?
32. 32.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a narrow pipe (c) a bigger tank (d) the water pressure
33. 33.Which of these is measured in amperes (A)? (a) voltage (b) resistance (c) energy used each second (d) the flow of charge
34. 34.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
35. 35.📏 How many kilo-ohms (kΩ) is 1300 Ω? =
36. 36.📏 How many milliamperes (mA) is 2.7 A?
37. 37.📏 Which unit measures voltage? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
38. 38.True or false: energy used each second is measured in amperes (A). (a) True (b) False
39. 39.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
40. 40.📏 How many ohms (Ω) is 4.6 kΩ?

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