Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 360 · 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 ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 100 (c) 1024 (d) 10
2. 2.Which of these is measured in volts (V)? (a) the push of a cell (b) energy used each second (c) the flow of charge (d) current
3. 3.📏 How many ohms (Ω) is 2.2 kΩ?
4. 4.Which of these is measured in amperes (A)? (a) power (b) voltage (c) how much a part resists (d) the flow of charge
5. 5.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
6. 6.📏 How many milliamperes (mA) is 0.53 A?
7. 7.📏 How many watts (W) is 2.8 kW?
8. 8.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
9. 9.True or false: the voltmeter measures current. (a) True (b) False
10. 10.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
11. 11.📏 Which unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
12. 12.Which of these is measured in watts (W)? (a) resistance (b) how much a part resists (c) the flow of charge (d) power
13. 13.True or false: the voltmeter measures voltage. (a) True (b) False
14. 14.📏 Which unit measures the flow of charge? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
15. 15.📏 Which unit measures power? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
16. 16.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the water pressure (d) the pipe colour
17. 17.📏 How many amperes (A) is 2630 mA? =
18. 18.📏 How many amperes (A) is 2780 mA? =
19. 19.📏 How many watts (W) is 1.6 kW?
20. 20.True or false: voltage is measured in amperes (A). (a) True (b) False
21. 21.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 100 (c) 1000 (d) 60
22. 22.True or false: the flow of charge is measured in watts (W). (a) True (b) False
23. 23.📏 Which unit measures energy used each second? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
24. 24.📏 How many milliamperes (mA) is 2.17 A?
25. 25.Which of these is measured in volts (V)? (a) how much a part resists (b) the flow of charge (c) voltage (d) power
26. 26.📏 How many kilo-ohms (kΩ) is 2600 Ω? =
27. 27.📏 How many watts (W) is 0.5 kW?
28. 28.📏 How many milliamperes (mA) is 0.12 A?
29. 29.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the water pressure (c) a narrow pipe (d) the pipe colour
30. 30.📏 How many milliamperes (mA) is 2.48 A?
31. 31.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
32. 32.Which of these is measured in amperes (A)? (a) current (b) the push of a cell (c) how much a part resists (d) energy used each second
33. 33.True or false: the ammeter measures voltage. (a) False (b) True
34. 34.True or false: resistance is measured in ohms (Ω). (a) True (b) False
35. 35.True or false: the voltmeter is joined across a part. (a) True (b) False
36. 36.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
37. 37.📏 How many watts (W) is 1.7 kW?
38. 38.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
39. 39.Which of these is measured in ohms (Ω)? (a) voltage (b) current (c) how much a part resists (d) the push of a cell
40. 40.📏 How many watts (W) is 3.8 kW?

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