Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 19 · 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 power? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
2. 2.📏 How many watts (W) is 4.3 kW?
3. 3.📏 Which unit measures resistance? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
4. 4.📏 How many amperes (A) is 1270 mA? =
5. 5.True or false: voltage is measured in amperes (A). (a) True (b) False
6. 6.True or false: energy used each second is measured in volts (V). (a) True (b) False
7. 7.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 100 (c) 1024 (d) 1000
8. 8.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the flow of water (c) the water pressure (d) a narrow pipe
9. 9.📏 How many watts (W) is 4.9 kW?
10. 10.📏 How many milliamperes (mA) is 2.18 A?
11. 11.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
12. 12.True or false: the push of a cell is measured in watts (W). (a) True (b) False
13. 13.📏 How many watts (W) is 1.3 kW?
14. 14.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
15. 15.Which of these is measured in watts (W)? (a) resistance (b) the push of a cell (c) power (d) the flow of charge
16. 16.📏 Which unit measures voltage? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
17. 17.True or false: the push of a cell is measured in volts (V). (a) False (b) True
18. 18.📏 How many milliamperes (mA) is 1.22 A?
19. 19.📏 How many milliamperes (mA) is 2.07 A?
20. 20.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
21. 21.True or false: the voltmeter measures current. (a) False (b) True
22. 22.📏 Which unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
23. 23.True or false: power is measured in watts (W). (a) True (b) False
24. 24.📏 How many milliamperes (mA) is 1.3 A?
25. 25.True or false: the ammeter is joined across a part. (a) True (b) False
26. 26.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water pressure (c) the pipe colour (d) the water tank lid
27. 27.📏 How many amperes (A) is 1780 mA? =
28. 28.📏 How many kilowatts (kW) is 2650 W? =
29. 29.📏 Which unit measures energy used each second? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
30. 30.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
31. 31.📏 How many kilowatts (kW) is 2450 W? =
32. 32.📏 How many milliamperes (mA) is 0.6 A?
33. 33.True or false: the ammeter is joined in series. (a) True (b) False
34. 34.Which of these is measured in volts (V)? (a) how much a part resists (b) voltage (c) energy used each second (d) resistance
35. 35.📏 How many watts (W) is 3.7 kW?
36. 36.📏 How many kilowatts (kW) is 1350 W? =
37. 37.Which of these is measured in ohms (Ω)? (a) energy used each second (b) the flow of charge (c) voltage (d) how much a part resists
38. 38.📏 How many milliamperes (mA) is 0.34 A?
39. 39.📏 How many milliamperes (mA) is 2.58 A?
40. 40.📏 How many ohms (Ω) is 8 kΩ?

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