Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 230 · 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 kilo-ohms (kΩ) is 7900 Ω? =
2. 2.Which of these is measured in volts (V)? (a) energy used each second (b) the push of a cell (c) the flow of charge (d) current
3. 3.True or false: voltage is measured in amperes (A). (a) True (b) False
4. 4.True or false: the voltmeter is joined in series. (a) True (b) False
5. 5.📏 Which unit measures power? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
6. 6.📏 How many milliamperes (mA) is 1.04 A?
7. 7.Which of these is measured in volts (V)? (a) power (b) voltage (c) energy used each second (d) current
8. 8.📏 Which unit measures the flow of charge? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
9. 9.📏 How many kilo-ohms (kΩ) is 8600 Ω? =
10. 10.True or false: the voltmeter measures voltage. (a) False (b) True
11. 11.True or false: energy used each second is measured in amperes (A). (a) False (b) True
12. 12.📏 How many milliamperes (mA) is 0.41 A?
13. 13.Which of these is measured in amperes (A)? (a) current (b) energy used each second (c) resistance (d) power
14. 14.📏 Which unit measures voltage? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
15. 15.📏 How many amperes (A) is 2760 mA? =
16. 16.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
17. 17.True or false: resistance is measured in ohms (Ω). (a) True (b) False
18. 18.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
19. 19.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the water tank lid (c) the pipe colour (d) the tap handle
20. 20.📏 How many kilo-ohms (kΩ) is 300 Ω? =
21. 21.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
22. 22.True or false: the ammeter is joined across a part. (a) False (b) True
23. 23.True or false: the voltmeter is joined across a part. (a) True (b) False
24. 24.📏 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
25. 25.📏 How many milliamperes (mA) is 1.45 A?
26. 26.Which of these is measured in amperes (A)? (a) resistance (b) the push of a cell (c) the flow of charge (d) energy used each second
27. 27.📏 How many ohms (Ω) is 5 kΩ?
28. 28.📏 How many ohms (Ω) is 3.7 kΩ?
29. 29.True or false: the push of a cell is measured in volts (V). (a) False (b) True
30. 30.Which of these is measured in watts (W)? (a) resistance (b) voltage (c) power (d) the flow of charge
31. 31.True or false: current is measured in watts (W). (a) False (b) True
32. 32.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
33. 33.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
34. 34.📏 How many watts (W) is 1.2 kW?
35. 35.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
36. 36.📏 How many ohms (Ω) is 2.8 kΩ?
37. 37.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the flow of water (c) the pipe colour (d) a narrow pipe
38. 38.📏 How many watts (W) is 1.1 kW?
39. 39.📏 How many milliamperes (mA) is 1.49 A?
40. 40.📏 How many amperes (A) is 2190 mA? =

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