Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 456 · 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 amperes (A) is 840 mA? =
2. 2.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
3. 3.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
4. 4.📏 How many kilowatts (kW) is 1650 W? =
5. 5.True or false: voltage is measured in amperes (A). (a) False (b) True
6. 6.Which of these is measured in amperes (A)? (a) current (b) resistance (c) how much a part resists (d) voltage
7. 7.Which of these is measured in volts (V)? (a) power (b) the flow of charge (c) resistance (d) the push of a cell
8. 8.True or false: current is measured in amperes (A). (a) False (b) True
9. 9.📏 Which unit measures power? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
10. 10.📏 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
11. 11.📏 Which unit measures the push of a cell? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
12. 12.📏 Which unit measures current? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
13. 13.📏 Which unit measures resistance? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
14. 14.True or false: the voltmeter measures voltage. (a) True (b) False
15. 15.True or false: the voltmeter measures current. (a) True (b) False
16. 16.📏 Which unit measures voltage? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
17. 17.True or false: the ammeter is joined across a part. (a) True (b) False
18. 18.📏 Which unit measures energy used each second? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
19. 19.📏 How many ohms (Ω) is 9.3 kΩ?
20. 20.📏 How many amperes (A) is 1500 mA? =
21. 21.True or false: the voltmeter is joined across a part. (a) False (b) True
22. 22.True or false: power is measured in amperes (A). (a) True (b) False
23. 23.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
24. 24.📏 How many watts (W) is 1.4 kW?
25. 25.📏 How many kilo-ohms (kΩ) is 3300 Ω? =
26. 26.📏 How many amperes (A) is 810 mA? =
27. 27.📏 How many ohms (Ω) is 6.2 kΩ?
28. 28.Which of these is measured in amperes (A)? (a) voltage (b) the push of a cell (c) the flow of charge (d) resistance
29. 29.📏 How many amperes (A) is 270 mA? =
30. 30.📏 How many amperes (A) is 2520 mA? =
31. 31.Which of these is measured in ohms (Ω)? (a) voltage (b) resistance (c) current (d) energy used each second
32. 32.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
33. 33.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1000 (c) 1024 (d) 10
34. 34.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
35. 35.Which of these is measured in watts (W)? (a) the push of a cell (b) how much a part resists (c) resistance (d) power
36. 36.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
37. 37.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 100 (c) 10 (d) 1000
38. 38.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the tap handle (c) the pipe colour (d) the water pressure
39. 39.📏 How many ohms (Ω) is 1.6 kΩ?
40. 40.📏 How many kilowatts (kW) is 1000 W? =

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