Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 388 · 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 unit measures the flow of charge? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
2. 2.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a narrow pipe (c) the water pressure (d) a bigger tank
3. 3.True or false: the ammeter measures voltage. (a) False (b) True
4. 4.📏 How many watts (W) is 4.7 kW?
5. 5.📏 How many watts (W) is 1.5 kW?
6. 6.Which of these is measured in watts (W)? (a) energy used each second (b) how much a part resists (c) current (d) the push of a cell
7. 7.True or false: the ammeter is joined across a part. (a) True (b) False
8. 8.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
9. 9.Which of these is measured in volts (V)? (a) the push of a cell (b) how much a part resists (c) resistance (d) power
10. 10.Which of these is measured in ohms (Ω)? (a) energy used each second (b) the push of a cell (c) how much a part resists (d) current
11. 11.True or false: how much a part resists is measured in volts (V). (a) True (b) False
12. 12.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
13. 13.📏 How many kilowatts (kW) is 5000 W? =
14. 14.📏 How many watts (W) is 0.2 kW?
15. 15.📏 How many milliamperes (mA) is 1.29 A?
16. 16.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
17. 17.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
18. 18.Which of these is measured in ohms (Ω)? (a) energy used each second (b) voltage (c) resistance (d) the flow of charge
19. 19.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 60 (c) 100 (d) 10
20. 20.Which of these is measured in amperes (A)? (a) the push of a cell (b) resistance (c) energy used each second (d) current
21. 21.True or false: the voltmeter is joined across a part. (a) False (b) True
22. 22.📏 Which unit measures the push of a cell? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
23. 23.📏 Which unit measures how much a part resists? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
24. 24.Which of these is measured in watts (W)? (a) power (b) resistance (c) voltage (d) current
25. 25.True or false: voltage is measured in volts (V). (a) True (b) False
26. 26.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
27. 27.📏 How many watts (W) is 4.5 kW?
28. 28.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
29. 29.True or false: resistance is measured in ohms (Ω). (a) False (b) True
30. 30.📏 How many kilo-ohms (kΩ) is 8200 Ω? =
31. 31.📏 How many kilowatts (kW) is 3350 W? =
32. 32.True or false: the voltmeter is joined in series. (a) True (b) False
33. 33.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
34. 34.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the pipe colour (c) the water tank lid (d) the tap handle
35. 35.True or false: the ammeter is joined in series. (a) True (b) False
36. 36.📏 Which unit measures current? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
37. 37.True or false: the voltmeter measures voltage. (a) False (b) True
38. 38.True or false: resistance is measured in amperes (A). (a) True (b) False
39. 39.True or false: the ammeter measures current. (a) True (b) False
40. 40.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 10 (c) 100 (d) 1024

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