Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 459 · 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.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
2. 2.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
3. 3.True or false: the voltmeter measures current. (a) False (b) True
4. 4.Which of these is measured in volts (V)? (a) energy used each second (b) voltage (c) the flow of charge (d) how much a part resists
5. 5.📏 How many watts (W) is 1.1 kW?
6. 6.📏 Which unit measures the push of a cell? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
7. 7.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
8. 8.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
9. 9.True or false: power is measured in ohms (Ω). (a) False (b) True
10. 10.📏 How many milliamperes (mA) is 1.99 A?
11. 11.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 1000 (d) 100
12. 12.📏 How many milliamperes (mA) is 0.2 A?
13. 13.Which of these is measured in watts (W)? (a) voltage (b) resistance (c) current (d) energy used each second
14. 14.📏 How many amperes (A) is 510 mA? =
15. 15.📏 Which unit measures the flow of charge? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
16. 16.True or false: current is measured in ohms (Ω). (a) False (b) True
17. 17.Which of these is measured in ohms (Ω)? (a) power (b) the flow of charge (c) voltage (d) resistance
18. 18.📏 How many ohms (Ω) is 0.1 kΩ?
19. 19.True or false: current is measured in volts (V). (a) False (b) True
20. 20.📏 How many milliamperes (mA) is 2.43 A?
21. 21.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) a narrow pipe (d) the flow of water
22. 22.True or false: the voltmeter is joined in series. (a) True (b) False
23. 23.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water pressure (c) the water tank lid (d) the tap handle
24. 24.True or false: the flow of charge is measured in watts (W). (a) False (b) True
25. 25.📏 How many ohms (Ω) is 4.2 kΩ?
26. 26.📏 How many kilo-ohms (kΩ) is 4100 Ω? =
27. 27.True or false: the voltmeter is joined across a part. (a) True (b) False
28. 28.📏 Which unit measures current? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
29. 29.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
30. 30.True or false: voltage is measured in volts (V). (a) False (b) True
31. 31.Which of these is measured in watts (W)? (a) voltage (b) current (c) the flow of charge (d) power
32. 32.📏 How many ohms (Ω) is 0.8 kΩ?
33. 33.True or false: resistance is measured in ohms (Ω). (a) False (b) True
34. 34.True or false: energy used each second is measured in ohms (Ω). (a) False (b) True
35. 35.📏 How many milliamperes (mA) is 0.89 A?
36. 36.📏 How many watts (W) is 0.4 kW?
37. 37.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 1000 (c) 10 (d) 100
38. 38.Which of these is measured in amperes (A)? (a) energy used each second (b) voltage (c) current (d) how much a part resists
39. 39.📏 How many amperes (A) is 390 mA? =
40. 40.📏 How many milliamperes (mA) is 1.46 A?

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