Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 393 · 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.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the pipe colour (c) the flow of water (d) a narrow pipe
2. 2.📏 How many kilo-ohms (kΩ) is 2200 Ω? =
3. 3.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
4. 4.📏 How many kilo-ohms (kΩ) is 5600 Ω? =
5. 5.📏 Which unit measures voltage? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
6. 6.📏 Which unit measures energy used each second? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
7. 7.📏 How many ohms (Ω) is 7.1 kΩ?
8. 8.True or false: the ammeter is joined in series. (a) True (b) False
9. 9.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
10. 10.True or false: energy used each second is measured in watts (W). (a) True (b) False
11. 11.Which of these is measured in amperes (A)? (a) the flow of charge (b) resistance (c) how much a part resists (d) power
12. 12.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water pressure (c) the tap handle (d) the water tank lid
13. 13.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
14. 14.Which of these is measured in watts (W)? (a) how much a part resists (b) power (c) voltage (d) the push of a cell
15. 15.📏 How many watts (W) is 1.4 kW?
16. 16.📏 Which unit measures the flow of charge? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
17. 17.Which of these is measured in watts (W)? (a) voltage (b) the push of a cell (c) resistance (d) energy used each second
18. 18.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
19. 19.📏 Which unit measures power? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
20. 20.Which of these is measured in volts (V)? (a) resistance (b) current (c) the push of a cell (d) the flow of charge
21. 21.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
22. 22.True or false: how much a part resists is measured in watts (W). (a) True (b) False
23. 23.True or false: the voltmeter measures current. (a) True (b) False
24. 24.📏 How many amperes (A) is 1260 mA? =
25. 25.True or false: energy used each second is measured in amperes (A). (a) True (b) False
26. 26.True or false: the voltmeter is joined across a part. (a) False (b) True
27. 27.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 10 (d) 1000
28. 28.True or false: the voltmeter is joined in series. (a) True (b) False
29. 29.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 100 (c) 10 (d) 60
30. 30.📏 Which unit measures resistance? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
31. 31.📏 How many ohms (Ω) is 7.4 kΩ?
32. 32.True or false: voltage is measured in volts (V). (a) False (b) True
33. 33.📏 How many amperes (A) is 480 mA? =
34. 34.Which of these is measured in ohms (Ω)? (a) power (b) how much a part resists (c) energy used each second (d) current
35. 35.True or false: the ammeter is joined across a part. (a) False (b) True
36. 36.📏 How many amperes (A) is 1800 mA? =
37. 37.📏 How many kilowatts (kW) is 50 W? =
38. 38.📏 How many kilo-ohms (kΩ) is 900 Ω? =
39. 39.📏 Which unit measures current? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
40. 40.True or false: voltage is measured in amperes (A). (a) False (b) True

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