Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 649 · 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.Which of these is measured in watts (W)? (a) how much a part resists (b) resistance (c) voltage (d) energy used each second
2. 2.📏 How many milliamperes (mA) is 1.27 A?
3. 3.True or false: the ammeter is joined in series. (a) False (b) True
4. 4.📏 Which unit measures the push of a cell? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
5. 5.📏 How many watts (W) is 3.1 kW?
6. 6.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
7. 7.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
8. 8.True or false: the voltmeter is joined in series. (a) False (b) True
9. 9.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the tap handle (c) the water tank lid (d) the pipe colour
10. 10.📏 How many watts (W) is 4.9 kW?
11. 11.True or false: resistance is measured in ohms (Ω). (a) True (b) False
12. 12.True or false: the voltmeter is joined across a part. (a) False (b) True
13. 13.Which of these is measured in ohms (Ω)? (a) energy used each second (b) resistance (c) power (d) the push of a cell
14. 14.True or false: the ammeter is joined across a part. (a) True (b) False
15. 15.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 1000 (d) 10
16. 16.True or false: how much a part resists is measured in volts (V). (a) True (b) False
17. 17.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
18. 18.📏 How many milliamperes (mA) is 1.2 A?
19. 19.📏 How many watts (W) is 2.2 kW?
20. 20.Which of these is measured in volts (V)? (a) the push of a cell (b) how much a part resists (c) energy used each second (d) current
21. 21.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the water pressure (c) the flow of water (d) a bigger tank
22. 22.📏 How many kilowatts (kW) is 3150 W? =
23. 23.True or false: the push of a cell is measured in volts (V). (a) True (b) False
24. 24.Which of these is measured in amperes (A)? (a) voltage (b) current (c) power (d) how much a part resists
25. 25.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) power (c) energy used each second (d) how much a part resists
26. 26.True or false: voltage is measured in ohms (Ω). (a) True (b) False
27. 27.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
28. 28.True or false: voltage is measured in volts (V). (a) False (b) True
29. 29.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
30. 30.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 1000 (d) 100
31. 31.True or false: current is measured in ohms (Ω). (a) True (b) False
32. 32.📏 How many milliamperes (mA) is 1.06 A?
33. 33.📏 Which unit measures how much a part resists? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
34. 34.True or false: resistance is measured in volts (V). (a) False (b) True
35. 35.📏 Which unit measures current? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
36. 36.📏 How many watts (W) is 1.7 kW?
37. 37.📏 How many ohms (Ω) is 1 kΩ?
38. 38.📏 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
39. 39.📏 How many watts (W) is 1.5 kW?
40. 40.📏 How many watts (W) is 1.9 kW?

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