Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 709 · 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 milliamperes (mA) is 2.42 A?
2. 2.Which of these is measured in watts (W)? (a) the push of a cell (b) power (c) how much a part resists (d) voltage
3. 3.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
4. 4.Which of these is measured in volts (V)? (a) resistance (b) power (c) energy used each second (d) the push of a cell
5. 5.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
6. 6.True or false: resistance is measured in amperes (A). (a) False (b) True
7. 7.Which of these is measured in amperes (A)? (a) the push of a cell (b) resistance (c) voltage (d) current
8. 8.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1000 (c) 10 (d) 1024
9. 9.True or false: the voltmeter measures voltage. (a) False (b) True
10. 10.True or false: the ammeter measures voltage. (a) False (b) True
11. 11.📏 How many milliamperes (mA) is 2.52 A?
12. 12.📏 How many watts (W) is 4.3 kW?
13. 13.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
14. 14.True or false: the ammeter is joined across a part. (a) False (b) True
15. 15.📏 Which unit measures power? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
16. 16.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the flow of water (c) a narrow pipe (d) the water pressure
17. 17.Which of these is measured in amperes (A)? (a) the push of a cell (b) voltage (c) the flow of charge (d) resistance
18. 18.📏 Which unit measures energy used each second? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
19. 19.📏 How many amperes (A) is 1170 mA? =
20. 20.True or false: the flow of charge is measured in volts (V). (a) False (b) True
21. 21.📏 How many ohms (Ω) is 3 kΩ?
22. 22.📏 Which unit measures current? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
23. 23.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
24. 24.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
25. 25.📏 How many kilo-ohms (kΩ) is 1600 Ω? =
26. 26.📏 Which unit measures how much a part resists? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
27. 27.True or false: the voltmeter measures current. (a) True (b) False
28. 28.📏 How many milliamperes (mA) is 2.41 A?
29. 29.True or false: voltage is measured in amperes (A). (a) True (b) False
30. 30.True or false: the voltmeter is joined across a part. (a) False (b) True
31. 31.📏 How many amperes (A) is 1950 mA? =
32. 32.📏 How many milliamperes (mA) is 2.07 A?
33. 33.📏 How many kilowatts (kW) is 4150 W? =
34. 34.True or false: voltage is measured in volts (V). (a) True (b) False
35. 35.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
36. 36.Which of these is measured in ohms (Ω)? (a) current (b) voltage (c) resistance (d) energy used each second
37. 37.True or false: energy used each second is measured in watts (W). (a) True (b) False
38. 38.True or false: energy used each second is measured in amperes (A). (a) True (b) False
39. 39.True or false: the voltmeter is joined in series. (a) True (b) False
40. 40.📏 How many milliamperes (mA) is 2.59 A?

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