Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 28 · 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 amperes (A)? (a) how much a part resists (b) the flow of charge (c) energy used each second (d) resistance
2. 2.📏 How many ohms (Ω) is 0.5 kΩ?
3. 3.True or false: the ammeter is joined in series. (a) True (b) False
4. 4.Which of these is measured in ohms (Ω)? (a) current (b) how much a part resists (c) energy used each second (d) power
5. 5.📏 How many kilo-ohms (kΩ) is 4500 Ω? =
6. 6.📏 How many amperes (A) is 1530 mA? =
7. 7.📏 How many milliamperes (mA) is 2.53 A?
8. 8.True or false: the ammeter is joined across a part. (a) True (b) False
9. 9.📏 Which unit measures the push of a cell? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
10. 10.📏 Which unit measures the flow of charge? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
11. 11.True or false: power is measured in volts (V). (a) True (b) False
12. 12.📏 How many kilowatts (kW) is 2600 W? =
13. 13.📏 Which unit measures resistance? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
14. 14.True or false: current is measured in amperes (A). (a) False (b) True
15. 15.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water pressure (c) the pipe colour (d) the water tank lid
16. 16.📏 How many ohms (Ω) is 9.4 kΩ?
17. 17.Which of these is measured in amperes (A)? (a) how much a part resists (b) energy used each second (c) current (d) voltage
18. 18.True or false: the ammeter measures voltage. (a) False (b) True
19. 19.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
20. 20.📏 How many watts (W) is 3.9 kW?
21. 21.📏 How many ohms (Ω) is 6.4 kΩ?
22. 22.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 100 (c) 10 (d) 1000
23. 23.True or false: voltage is measured in amperes (A). (a) False (b) True
24. 24.📏 How many amperes (A) is 110 mA? =
25. 25.Which of these is measured in watts (W)? (a) resistance (b) voltage (c) the push of a cell (d) power
26. 26.📏 How many ohms (Ω) is 0.3 kΩ?
27. 27.True or false: the push of a cell is measured in watts (W). (a) True (b) False
28. 28.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
29. 29.📏 How many amperes (A) is 450 mA? =
30. 30.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
31. 31.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
32. 32.True or false: energy used each second is measured in watts (W). (a) True (b) False
33. 33.True or false: resistance is measured in ohms (Ω). (a) False (b) True
34. 34.📏 Which unit measures energy used each second? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
35. 35.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
36. 36.📏 How many amperes (A) is 2460 mA? =
37. 37.📏 How many milliamperes (mA) is 0.18 A?
38. 38.True or false: the voltmeter is joined across a part. (a) True (b) False
39. 39.Which of these is measured in ohms (Ω)? (a) voltage (b) energy used each second (c) the flow of charge (d) resistance
40. 40.True or false: energy used each second is measured in volts (V). (a) True (b) False

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