Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 963 · 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 of these is measured in watts (W)? (a) voltage (b) energy used each second (c) how much a part resists (d) the push of a cell
2. 2.📏 How many amperes (A) is 520 mA? =
3. 3.📏 Which unit measures resistance? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
4. 4.📏 How many kilo-ohms (kΩ) is 6200 Ω? =
5. 5.📏 Which unit measures voltage? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
6. 6.True or false: power is measured in ohms (Ω). (a) False (b) True
7. 7.True or false: the voltmeter is joined across a part. (a) True (b) False
8. 8.True or false: current is measured in amperes (A). (a) True (b) False
9. 9.True or false: the flow of charge is measured in watts (W). (a) True (b) False
10. 10.📏 How many ohms (Ω) is 1.4 kΩ?
11. 11.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 1000 (d) 60
12. 12.📏 How many watts (W) is 1.4 kW?
13. 13.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
14. 14.Which of these is measured in watts (W)? (a) how much a part resists (b) the push of a cell (c) voltage (d) power
15. 15.📏 How many watts (W) is 2.1 kW?
16. 16.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
17. 17.True or false: power is measured in watts (W). (a) True (b) False
18. 18.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
19. 19.📏 How many kilo-ohms (kΩ) is 7700 Ω? =
20. 20.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the pipe colour (c) a narrow pipe (d) the water pressure
21. 21.Which of these is measured in volts (V)? (a) energy used each second (b) how much a part resists (c) the push of a cell (d) current
22. 22.📏 How many watts (W) is 1.9 kW?
23. 23.True or false: energy used each second is measured in volts (V). (a) False (b) True
24. 24.📏 How many amperes (A) is 1140 mA? =
25. 25.📏 Which unit measures power? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
26. 26.📏 How many watts (W) is 4.5 kW?
27. 27.📏 How many kilowatts (kW) is 400 W? =
28. 28.True or false: the voltmeter is joined in series. (a) False (b) True
29. 29.📏 How many kilowatts (kW) is 1550 W? =
30. 30.📏 How many milliamperes (mA) is 1.42 A?
31. 31.True or false: the ammeter is joined across a part. (a) True (b) False
32. 32.Which of these is measured in amperes (A)? (a) resistance (b) voltage (c) how much a part resists (d) the flow of charge
33. 33.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) voltage (c) the push of a cell (d) resistance
34. 34.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 10 (c) 100 (d) 1000
35. 35.True or false: current is measured in ohms (Ω). (a) True (b) False
36. 36.📏 Which unit measures the push of a cell? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
37. 37.True or false: resistance is measured in ohms (Ω). (a) True (b) False
38. 38.Which of these is measured in amperes (A)? (a) the push of a cell (b) energy used each second (c) how much a part resists (d) current
39. 39.📏 How many milliamperes (mA) is 2.48 A?
40. 40.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) how much a part resists (c) power (d) current

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