Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 985 · 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 2.8 kW?
2. 2.Which of these is measured in watts (W)? (a) how much a part resists (b) resistance (c) energy used each second (d) the push of a cell
3. 3.True or false: the ammeter measures current. (a) False (b) True
4. 4.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 60 (d) 1000
5. 5.True or false: the voltmeter measures current. (a) True (b) False
6. 6.📏 How many milliamperes (mA) is 1.06 A?
7. 7.Which of these is measured in amperes (A)? (a) voltage (b) the push of a cell (c) how much a part resists (d) current
8. 8.True or false: the ammeter measures voltage. (a) False (b) True
9. 9.Which of these is measured in volts (V)? (a) how much a part resists (b) resistance (c) the flow of charge (d) voltage
10. 10.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
11. 11.📏 How many amperes (A) is 1570 mA? =
12. 12.📏 How many amperes (A) is 2910 mA? =
13. 13.📏 How many amperes (A) is 670 mA? =
14. 14.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
15. 15.Which of these is measured in ohms (Ω)? (a) current (b) power (c) resistance (d) the push of a cell
16. 16.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
17. 17.📏 How many ohms (Ω) is 2.8 kΩ?
18. 18.True or false: resistance is measured in volts (V). (a) False (b) True
19. 19.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
20. 20.📏 Which unit measures energy used each second? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
21. 21.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) a narrow pipe (c) the pipe colour (d) the flow of water
22. 22.Which of these is measured in amperes (A)? (a) the flow of charge (b) resistance (c) voltage (d) energy used each second
23. 23.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 100 (c) 1000 (d) 1024
24. 24.True or false: the voltmeter is joined across a part. (a) False (b) True
25. 25.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
26. 26.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
27. 27.📏 How many kilo-ohms (kΩ) is 2300 Ω? =
28. 28.True or false: the voltmeter is joined in series. (a) True (b) False
29. 29.Which of these is measured in watts (W)? (a) current (b) resistance (c) voltage (d) power
30. 30.📏 How many watts (W) is 1.3 kW?
31. 31.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) energy used each second (c) how much a part resists (d) current
32. 32.📏 Which unit measures resistance? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
33. 33.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
34. 34.📏 How many amperes (A) is 1050 mA? =
35. 35.📏 Which unit measures power? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
36. 36.📏 Which unit measures current? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
37. 37.📏 How many watts (W) is 1 kW?
38. 38.📏 How many milliamperes (mA) is 1.37 A?
39. 39.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
40. 40.True or false: voltage is measured in watts (W). (a) True (b) False

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