Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 497 · 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 watts (W) is 2.6 kW?
2. 2.📏 Which unit measures the flow of charge? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
3. 3.📏 How many watts (W) is 0.1 kW?
4. 4.True or false: the voltmeter is joined in series. (a) False (b) True
5. 5.Which of these is measured in volts (V)? (a) current (b) the push of a cell (c) the flow of charge (d) power
6. 6.📏 Which unit measures energy used each second? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
7. 7.📏 How many kilo-ohms (kΩ) is 9200 Ω? =
8. 8.Which of these is measured in amperes (A)? (a) power (b) current (c) voltage (d) the push of a cell
9. 9.True or false: the voltmeter measures current. (a) True (b) False
10. 10.True or false: the flow of charge is measured in volts (V). (a) False (b) True
11. 11.📏 Which unit measures voltage? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
12. 12.📏 How many milliamperes (mA) is 1.59 A?
13. 13.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the pipe colour (c) the tap handle (d) the water pressure
14. 14.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
15. 15.True or false: the ammeter measures current. (a) False (b) True
16. 16.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the flow of water (c) a narrow pipe (d) the water pressure
17. 17.True or false: the ammeter is joined in series. (a) True (b) False
18. 18.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
19. 19.📏 Which unit measures power? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
20. 20.📏 Which unit measures how much a part resists? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
21. 21.Which of these is measured in amperes (A)? (a) the push of a cell (b) resistance (c) voltage (d) the flow of charge
22. 22.Which of these is measured in ohms (Ω)? (a) voltage (b) the push of a cell (c) the flow of charge (d) how much a part resists
23. 23.📏 Which unit measures resistance? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
24. 24.📏 How many watts (W) is 2.7 kW?
25. 25.📏 How many watts (W) is 1.8 kW?
26. 26.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
27. 27.Which of these is measured in volts (V)? (a) the flow of charge (b) voltage (c) how much a part resists (d) energy used each second
28. 28.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 100 (c) 1000 (d) 60
29. 29.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
30. 30.True or false: how much a part resists is measured in watts (W). (a) False (b) True
31. 31.Which of these is measured in watts (W)? (a) the flow of charge (b) energy used each second (c) resistance (d) voltage
32. 32.True or false: the ammeter measures voltage. (a) True (b) False
33. 33.📏 How many milliamperes (mA) is 0.59 A?
34. 34.True or false: the push of a cell is measured in volts (V). (a) True (b) False
35. 35.📏 How many milliamperes (mA) is 2.83 A?
36. 36.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
37. 37.📏 How many amperes (A) is 1260 mA? =
38. 38.📏 How many kilo-ohms (kΩ) is 7900 Ω? =
39. 39.📏 How many amperes (A) is 2090 mA? =
40. 40.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the flow of water (c) a narrow pipe (d) the pipe colour

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