Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 55 · 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 watts (W) is 4.1 kW?
2. 2.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
3. 3.📏 Which unit measures power? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
4. 4.📏 How many milliamperes (mA) is 1.54 A?
5. 5.📏 How many watts (W) is 4.2 kW?
6. 6.📏 Which unit measures current? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
7. 7.📏 Which unit measures voltage? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
8. 8.📏 How many kilowatts (kW) is 600 W? =
9. 9.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
10. 10.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 1000 (d) 100
11. 11.True or false: voltage is measured in ohms (Ω). (a) True (b) False
12. 12.📏 How many ohms (Ω) is 4.4 kΩ?
13. 13.True or false: the ammeter measures voltage. (a) True (b) False
14. 14.Which of these is measured in amperes (A)? (a) how much a part resists (b) energy used each second (c) current (d) the push of a cell
15. 15.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the tap handle (c) the water pressure (d) the water tank lid
16. 16.True or false: the ammeter is joined in series. (a) True (b) False
17. 17.📏 How many milliamperes (mA) is 0.57 A?
18. 18.True or false: the voltmeter measures current. (a) True (b) False
19. 19.True or false: energy used each second is measured in watts (W). (a) True (b) False
20. 20.True or false: current is measured in ohms (Ω). (a) True (b) False
21. 21.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
22. 22.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) how much a part resists (c) the flow of charge (d) power
23. 23.True or false: power is measured in amperes (A). (a) False (b) True
24. 24.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 1000 (d) 10
25. 25.True or false: the voltmeter is joined across a part. (a) False (b) True
26. 26.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
27. 27.Which of these is measured in volts (V)? (a) energy used each second (b) current (c) the flow of charge (d) voltage
28. 28.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) a bigger tank (c) the water pressure (d) the flow of water
29. 29.Which of these is measured in watts (W)? (a) the flow of charge (b) how much a part resists (c) energy used each second (d) resistance
30. 30.📏 How many kilowatts (kW) is 550 W? =
31. 31.True or false: current is measured in amperes (A). (a) False (b) True
32. 32.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
33. 33.True or false: the voltmeter measures voltage. (a) True (b) False
34. 34.📏 How many kilowatts (kW) is 1300 W? =
35. 35.Which of these is measured in volts (V)? (a) the push of a cell (b) how much a part resists (c) the flow of charge (d) energy used each second
36. 36.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
37. 37.Which of these is measured in ohms (Ω)? (a) resistance (b) the flow of charge (c) power (d) the push of a cell
38. 38.True or false: current is measured in watts (W). (a) False (b) True
39. 39.True or false: the ammeter is joined across a part. (a) False (b) True
40. 40.True or false: the push of a cell is measured in amperes (A). (a) True (b) False

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