Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 83 · 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 watts (W)? (a) voltage (b) power (c) the flow of charge (d) the push of a cell
2. 2.📏 Which unit measures how much a part resists? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
3. 3.True or false: the voltmeter measures voltage. (a) True (b) False
4. 4.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
5. 5.📏 Which unit measures the flow of charge? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
6. 6.📏 How many milliamperes (mA) is 0.15 A?
7. 7.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) voltage (c) the push of a cell (d) energy used each second
8. 8.📏 How many kilowatts (kW) is 1000 W? =
9. 9.Which of these is measured in volts (V)? (a) energy used each second (b) resistance (c) the flow of charge (d) voltage
10. 10.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
11. 11.📏 How many ohms (Ω) is 9.6 kΩ?
12. 12.True or false: the ammeter is joined across a part. (a) True (b) False
13. 13.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
14. 14.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 10 (c) 1024 (d) 100
15. 15.📏 Which unit measures current? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
16. 16.📏 How many ohms (Ω) is 0.2 kΩ?
17. 17.True or false: the ammeter measures voltage. (a) True (b) False
18. 18.📏 Which unit measures resistance? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
19. 19.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
20. 20.📏 How many ohms (Ω) is 9.7 kΩ?
21. 21.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) a narrow pipe (c) the pipe colour (d) the water pressure
22. 22.📏 How many milliamperes (mA) is 1.06 A?
23. 23.📏 How many kilo-ohms (kΩ) is 9400 Ω? =
24. 24.📏 How many amperes (A) is 1320 mA? =
25. 25.True or false: the ammeter measures current. (a) False (b) True
26. 26.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
27. 27.📏 How many watts (W) is 4.3 kW?
28. 28.True or false: the ammeter is joined in series. (a) True (b) False
29. 29.📏 How many amperes (A) is 2730 mA? =
30. 30.True or false: the voltmeter is joined across a part. (a) False (b) True
31. 31.📏 How many kilowatts (kW) is 2850 W? =
32. 32.Which of these is measured in watts (W)? (a) the push of a cell (b) current (c) voltage (d) energy used each second
33. 33.📏 How many amperes (A) is 2570 mA? =
34. 34.Which of these is measured in amperes (A)? (a) the push of a cell (b) voltage (c) the flow of charge (d) energy used each second
35. 35.📏 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
36. 36.📏 How many milliamperes (mA) is 1.46 A?
37. 37.📏 How many milliamperes (mA) is 2.11 A?
38. 38.True or false: energy used each second is measured in watts (W). (a) False (b) True
39. 39.📏 How many milliamperes (mA) is 2.02 A?
40. 40.True or false: the voltmeter measures current. (a) False (b) True

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