Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 630 · 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 5 kW?
2. 2.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) voltage (c) energy used each second (d) how much a part resists
3. 3.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 60 (c) 10 (d) 100
4. 4.📏 How many amperes (A) is 1090 mA? =
5. 5.True or false: current is measured in amperes (A). (a) False (b) True
6. 6.📏 How many amperes (A) is 1170 mA? =
7. 7.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a bigger tank (c) a narrow pipe (d) the water pressure
8. 8.Which of these is measured in watts (W)? (a) resistance (b) energy used each second (c) voltage (d) how much a part resists
9. 9.📏 How many amperes (A) is 2630 mA? =
10. 10.True or false: the ammeter is joined across a part. (a) False (b) True
11. 11.📏 How many milliamperes (mA) is 2.43 A?
12. 12.Which of these is measured in ohms (Ω)? (a) resistance (b) the push of a cell (c) energy used each second (d) voltage
13. 13.📏 How many kilo-ohms (kΩ) is 1300 Ω? =
14. 14.True or false: power is measured in watts (W). (a) False (b) True
15. 15.📏 Which unit measures power? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
16. 16.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
17. 17.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) a narrow pipe (d) the flow of water
18. 18.Which of these is measured in volts (V)? (a) power (b) energy used each second (c) the flow of charge (d) the push of a cell
19. 19.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
20. 20.True or false: voltage is measured in volts (V). (a) False (b) True
21. 21.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
22. 22.True or false: energy used each second is measured in watts (W). (a) False (b) True
23. 23.📏 How many kilo-ohms (kΩ) is 2000 Ω? =
24. 24.Which of these is measured in watts (W)? (a) voltage (b) power (c) the push of a cell (d) how much a part resists
25. 25.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
26. 26.True or false: the voltmeter measures current. (a) True (b) False
27. 27.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
28. 28.📏 Which unit measures current? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
29. 29.Which of these is measured in amperes (A)? (a) voltage (b) how much a part resists (c) the push of a cell (d) current
30. 30.📏 How many watts (W) is 0.1 kW?
31. 31.True or false: the ammeter measures voltage. (a) False (b) True
32. 32.True or false: the voltmeter measures voltage. (a) True (b) False
33. 33.📏 How many watts (W) is 1.5 kW?
34. 34.True or false: voltage is measured in amperes (A). (a) False (b) True
35. 35.📏 How many milliamperes (mA) is 2.22 A?
36. 36.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
37. 37.True or false: the ammeter is joined in series. (a) False (b) True
38. 38.Which of these is measured in volts (V)? (a) voltage (b) power (c) resistance (d) current
39. 39.📏 How many milliamperes (mA) is 0.09 A?
40. 40.True or false: the voltmeter is joined across a part. (a) False (b) True

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