Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 622 · 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) is 2.64 A?
2. 2.📏 Which unit measures how much a part resists? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
3. 3.Which of these is measured in watts (W)? (a) the push of a cell (b) energy used each second (c) voltage (d) the flow of charge
4. 4.📏 How many watts (W) is 0.9 kW?
5. 5.📏 Which unit measures power? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
6. 6.True or false: the voltmeter is joined in series. (a) True (b) False
7. 7.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 60 (c) 1000 (d) 10
8. 8.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
9. 9.📏 How many kilo-ohms (kΩ) is 5300 Ω? =
10. 10.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a bigger tank (c) the flow of water (d) a narrow pipe
11. 11.📏 Which unit measures the push of a cell? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
12. 12.📏 Which unit measures resistance? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
13. 13.📏 How many amperes (A) is 1880 mA? =
14. 14.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the pipe colour (c) the water tank lid (d) the water pressure
15. 15.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
16. 16.True or false: the ammeter measures voltage. (a) True (b) False
17. 17.Which of these is measured in watts (W)? (a) current (b) the push of a cell (c) power (d) the flow of charge
18. 18.True or false: the push of a cell is measured in volts (V). (a) False (b) True
19. 19.True or false: the voltmeter measures current. (a) False (b) True
20. 20.📏 How many milliamperes (mA) is 1.98 A?
21. 21.📏 How many kilowatts (kW) is 1400 W? =
22. 22.True or false: the voltmeter measures voltage. (a) True (b) False
23. 23.True or false: current is measured in amperes (A). (a) True (b) False
24. 24.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) the flow of water (d) a narrow pipe
25. 25.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
26. 26.📏 How many kilo-ohms (kΩ) is 6800 Ω? =
27. 27.📏 Which unit measures energy used each second? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
28. 28.📏 How many amperes (A) is 260 mA? =
29. 29.📏 How many watts (W) is 4.6 kW?
30. 30.📏 How many amperes (A) is 500 mA? =
31. 31.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
32. 32.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) how much a part resists (c) the push of a cell (d) energy used each second
33. 33.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
34. 34.📏 How many watts (W) is 2.8 kW?
35. 35.Which of these is measured in volts (V)? (a) voltage (b) the flow of charge (c) resistance (d) current
36. 36.True or false: voltage is measured in volts (V). (a) True (b) False
37. 37.📏 How many kilowatts (kW) is 1050 W? =
38. 38.True or false: the ammeter is joined across a part. (a) True (b) False
39. 39.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
40. 40.📏 How many milliamperes (mA) is 0.48 A?

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