Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 740 · 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 960 mA? =
2. 2.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) the water pressure (c) a narrow pipe (d) a bigger tank
3. 3.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
4. 4.📏 How many kilo-ohms (kΩ) is 800 Ω? =
5. 5.True or false: the flow of charge is measured in watts (W). (a) True (b) False
6. 6.📏 How many ohms (Ω) is 4.9 kΩ?
7. 7.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
8. 8.Which of these is measured in amperes (A)? (a) the push of a cell (b) energy used each second (c) power (d) the flow of charge
9. 9.Which of these is measured in volts (V)? (a) current (b) the flow of charge (c) resistance (d) voltage
10. 10.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
11. 11.📏 How many watts (W) is 3.7 kW?
12. 12.True or false: the voltmeter is joined in series. (a) True (b) False
13. 13.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the water tank lid (c) the tap handle (d) the pipe colour
14. 14.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
15. 15.Which of these is measured in watts (W)? (a) current (b) the flow of charge (c) voltage (d) energy used each second
16. 16.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
17. 17.📏 Which unit measures energy used each second? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
18. 18.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 60 (c) 100 (d) 1000
19. 19.📏 Which unit measures resistance? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
20. 20.📏 Which unit measures voltage? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
21. 21.📏 How many ohms (Ω) is 8.5 kΩ?
22. 22.Which of these is measured in watts (W)? (a) voltage (b) resistance (c) the push of a cell (d) power
23. 23.📏 How many amperes (A) is 1520 mA? =
24. 24.True or false: the ammeter measures voltage. (a) False (b) True
25. 25.Which of these is measured in volts (V)? (a) how much a part resists (b) resistance (c) current (d) the push of a cell
26. 26.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
27. 27.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 10 (d) 1000
28. 28.True or false: resistance is measured in volts (V). (a) True (b) False
29. 29.📏 How many milliamperes (mA) is 1.1 A?
30. 30.📏 How many amperes (A) is 120 mA? =
31. 31.📏 How many watts (W) is 3.1 kW?
32. 32.📏 How many amperes (A) is 180 mA? =
33. 33.True or false: energy used each second is measured in watts (W). (a) False (b) True
34. 34.True or false: resistance is measured in ohms (Ω). (a) False (b) True
35. 35.True or false: the voltmeter measures voltage. (a) False (b) True
36. 36.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
37. 37.📏 Which unit measures power? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
38. 38.📏 How many ohms (Ω) is 5.2 kΩ?
39. 39.📏 How many kilowatts (kW) is 400 W? =
40. 40.True or false: the push of a cell is measured in volts (V). (a) False (b) True

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