Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 298 · 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.True or false: the flow of charge is measured in volts (V). (a) True (b) False
2. 2.True or false: the voltmeter measures current. (a) True (b) False
3. 3.📏 How many amperes (A) is 580 mA? =
4. 4.True or false: the ammeter is joined in series. (a) True (b) False
5. 5.Which of these is measured in amperes (A)? (a) resistance (b) voltage (c) current (d) energy used each second
6. 6.Which of these is measured in ohms (Ω)? (a) resistance (b) the push of a cell (c) power (d) energy used each second
7. 7.📏 Which unit measures voltage? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
8. 8.True or false: current is measured in amperes (A). (a) True (b) False
9. 9.True or false: the voltmeter is joined across a part. (a) True (b) False
10. 10.Which of these is measured in watts (W)? (a) how much a part resists (b) power (c) current (d) resistance
11. 11.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 1000 (d) 10
12. 12.📏 How many watts (W) is 3.4 kW?
13. 13.📏 Which unit measures the flow of charge? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
14. 14.True or false: how much a part resists is measured in watts (W). (a) True (b) False
15. 15.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
16. 16.📏 How many watts (W) is 2.1 kW?
17. 17.Which of these is measured in volts (V)? (a) the push of a cell (b) the flow of charge (c) power (d) current
18. 18.Which of these is measured in amperes (A)? (a) the flow of charge (b) resistance (c) how much a part resists (d) energy used each second
19. 19.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
20. 20.📏 How many amperes (A) is 1210 mA? =
21. 21.True or false: voltage is measured in ohms (Ω). (a) True (b) False
22. 22.📏 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
23. 23.📏 How many kilo-ohms (kΩ) is 7000 Ω? =
24. 24.📏 How many ohms (Ω) is 4.1 kΩ?
25. 25.📏 How many kilo-ohms (kΩ) is 600 Ω? =
26. 26.📏 How many watts (W) is 4.7 kW?
27. 27.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) the water pressure (c) a narrow pipe (d) a bigger tank
28. 28.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
29. 29.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
30. 30.📏 How many milliamperes (mA) is 0.68 A?
31. 31.📏 Which unit measures energy used each second? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
32. 32.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
33. 33.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the water pressure (c) the flow of water (d) the pipe colour
34. 34.True or false: the ammeter measures voltage. (a) False (b) True
35. 35.📏 How many kilowatts (kW) is 2250 W? =
36. 36.True or false: voltage is measured in volts (V). (a) False (b) True
37. 37.📏 Which unit measures current? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
38. 38.📏 Which unit measures resistance? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
39. 39.True or false: the ammeter measures current. (a) True (b) False
40. 40.True or false: power is measured in watts (W). (a) False (b) True

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