Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 408 · 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 voltmeter is joined in series. (a) True (b) False
2. 2.📏 How many amperes (A) is 2840 mA? =
3. 3.📏 How many ohms (Ω) is 4 kΩ?
4. 4.📏 Which unit measures voltage? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
5. 5.📏 How many kilo-ohms (kΩ) is 9000 Ω? =
6. 6.True or false: the ammeter measures current. (a) False (b) True
7. 7.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the tap handle (c) the pipe colour (d) the water pressure
8. 8.Which of these is measured in ohms (Ω)? (a) energy used each second (b) voltage (c) how much a part resists (d) the push of a cell
9. 9.📏 How many watts (W) is 1.5 kW?
10. 10.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
11. 11.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True
12. 12.📏 Which unit measures current? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
13. 13.📏 How many milliamperes (mA) is 0.22 A?
14. 14.Which of these is measured in amperes (A)? (a) the flow of charge (b) voltage (c) how much a part resists (d) resistance
15. 15.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
16. 16.📏 How many milliamperes (mA) is 1.23 A?
17. 17.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) a narrow pipe (d) the flow of water
18. 18.True or false: resistance is measured in ohms (Ω). (a) False (b) True
19. 19.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
20. 20.Which of these is measured in volts (V)? (a) voltage (b) current (c) the flow of charge (d) power
21. 21.📏 How many kilowatts (kW) is 250 W? =
22. 22.📏 Which unit measures the flow of charge? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
23. 23.True or false: the flow of charge is measured in watts (W). (a) False (b) True
24. 24.📏 How many watts (W) is 2.2 kW?
25. 25.📏 How many ohms (Ω) is 7.9 kΩ?
26. 26.📏 How many amperes (A) is 1840 mA? =
27. 27.📏 Which unit measures energy used each second? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
28. 28.True or false: the ammeter is joined across a part. (a) False (b) True
29. 29.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 10 (d) 1000
30. 30.Which of these is measured in amperes (A)? (a) energy used each second (b) the push of a cell (c) voltage (d) current
31. 31.True or false: the voltmeter measures current. (a) True (b) False
32. 32.True or false: the voltmeter measures voltage. (a) False (b) True
33. 33.📏 How many milliamperes (mA) is 0.75 A?
34. 34.True or false: the ammeter is joined in series. (a) True (b) False
35. 35.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
36. 36.📏 How many kilo-ohms (kΩ) is 8800 Ω? =
37. 37.Which of these is measured in watts (W)? (a) current (b) voltage (c) the push of a cell (d) power
38. 38.📏 Which unit measures resistance? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
39. 39.True or false: the push of a cell is measured in volts (V). (a) True (b) False
40. 40.📏 How many watts (W) is 0.1 kW?

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