Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 995 · 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 current? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
2. 2.📏 How many ohms (Ω) is 7.4 kΩ?
3. 3.True or false: resistance is measured in watts (W). (a) False (b) True
4. 4.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
5. 5.Which of these is measured in watts (W)? (a) the push of a cell (b) voltage (c) energy used each second (d) resistance
6. 6.Which of these is measured in amperes (A)? (a) power (b) voltage (c) the push of a cell (d) current
7. 7.📏 How many watts (W) is 2.1 kW?
8. 8.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
9. 9.📏 Which unit measures power? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
10. 10.True or false: the ammeter measures current. (a) False (b) True
11. 11.True or false: the ammeter is joined across a part. (a) False (b) True
12. 12.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 100 (c) 60 (d) 10
13. 13.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the pipe colour (c) the water tank lid (d) the water pressure
14. 14.📏 Which unit measures the push of a cell? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
15. 15.📏 How many milliamperes (mA) is 1.07 A?
16. 16.📏 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
17. 17.📏 How many amperes (A) is 630 mA? =
18. 18.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
19. 19.True or false: resistance is measured in ohms (Ω). (a) False (b) True
20. 20.📏 How many watts (W) is 1.7 kW?
21. 21.True or false: the ammeter measures voltage. (a) True (b) False
22. 22.📏 Which unit measures resistance? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
23. 23.📏 How many milliamperes (mA) is 1.17 A?
24. 24.📏 How many watts (W) is 0.2 kW?
25. 25.True or false: the voltmeter measures voltage. (a) True (b) False
26. 26.📏 Which unit measures voltage? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
27. 27.📏 How many ohms (Ω) is 9.6 kΩ?
28. 28.True or false: energy used each second is measured in watts (W). (a) True (b) False
29. 29.📏 How many ohms (Ω) is 1.8 kΩ?
30. 30.Which of these is measured in amperes (A)? (a) power (b) resistance (c) the flow of charge (d) the push of a cell
31. 31.True or false: the voltmeter measures current. (a) True (b) False
32. 32.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
33. 33.Which of these is measured in ohms (Ω)? (a) voltage (b) resistance (c) power (d) current
34. 34.True or false: voltage is measured in watts (W). (a) False (b) True
35. 35.📏 How many kilowatts (kW) is 3450 W? =
36. 36.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
37. 37.📏 How many kilowatts (kW) is 3350 W? =
38. 38.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 1000 (c) 10 (d) 100
39. 39.Which of these is measured in volts (V)? (a) current (b) energy used each second (c) the push of a cell (d) the flow of charge
40. 40.📏 How many kilo-ohms (kΩ) is 700 Ω? =

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