Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 846 · 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.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) a narrow pipe (c) the water pressure (d) the pipe colour
2. 2.True or false: the voltmeter measures voltage. (a) False (b) True
3. 3.True or false: the ammeter measures current. (a) False (b) True
4. 4.📏 How many ohms (Ω) is 3.6 kΩ?
5. 5.Which of these is measured in amperes (A)? (a) current (b) resistance (c) power (d) how much a part resists
6. 6.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
7. 7.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
8. 8.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 100 (c) 60 (d) 1000
9. 9.True or false: resistance is measured in ohms (Ω). (a) False (b) True
10. 10.True or false: the ammeter is joined in series. (a) True (b) False
11. 11.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) power (c) how much a part resists (d) current
12. 12.📏 How many ohms (Ω) is 1.2 kΩ?
13. 13.📏 How many watts (W) is 4.7 kW?
14. 14.True or false: the voltmeter measures current. (a) False (b) True
15. 15.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
16. 16.📏 How many watts (W) is 1.2 kW?
17. 17.📏 Which unit measures the flow of charge? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
18. 18.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
19. 19.True or false: the ammeter is joined across a part. (a) True (b) False
20. 20.📏 How many kilowatts (kW) is 2950 W? =
21. 21.Which of these is measured in watts (W)? (a) how much a part resists (b) current (c) power (d) the flow of charge
22. 22.📏 Which unit measures power? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
23. 23.True or false: the push of a cell is measured in volts (V). (a) True (b) False
24. 24.📏 How many milliamperes (mA) is 2.31 A?
25. 25.📏 How many milliamperes (mA) is 2.35 A?
26. 26.📏 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
27. 27.📏 How many kilo-ohms (kΩ) is 5200 Ω? =
28. 28.Which of these is measured in volts (V)? (a) the push of a cell (b) power (c) how much a part resists (d) energy used each second
29. 29.True or false: voltage is measured in volts (V). (a) False (b) True
30. 30.📏 How many watts (W) is 0.2 kW?
31. 31.📏 How many watts (W) is 4.3 kW?
32. 32.True or false: how much a part resists is measured in amperes (A). (a) True (b) False
33. 33.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
34. 34.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
35. 35.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
36. 36.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1000 (d) 1024
37. 37.True or false: the voltmeter is joined in series. (a) False (b) True
38. 38.📏 How many kilowatts (kW) is 1050 W? =
39. 39.True or false: the ammeter measures voltage. (a) True (b) False
40. 40.📏 How many kilo-ohms (kΩ) is 500 Ω? =

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