Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 161 · 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 volts (V)? (a) how much a part resists (b) the push of a cell (c) current (d) energy used each second
2. 2.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) a narrow pipe (c) the water pressure (d) the flow of water
3. 3.📏 How many milliamperes (mA) is 0.29 A?
4. 4.📏 Which unit measures resistance? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
5. 5.📏 Which unit measures power? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
6. 6.True or false: resistance is measured in watts (W). (a) False (b) True
7. 7.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
8. 8.Which of these is measured in watts (W)? (a) the push of a cell (b) resistance (c) voltage (d) energy used each second
9. 9.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
10. 10.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
11. 11.True or false: energy used each second is measured in watts (W). (a) False (b) True
12. 12.📏 How many milliamperes (mA) is 1.32 A?
13. 13.True or false: the voltmeter is joined across a part. (a) True (b) False
14. 14.Which of these is measured in amperes (A)? (a) how much a part resists (b) current (c) resistance (d) energy used each second
15. 15.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
16. 16.True or false: the ammeter measures voltage. (a) True (b) False
17. 17.True or false: the ammeter is joined in series. (a) True (b) False
18. 18.True or false: the ammeter measures current. (a) False (b) True
19. 19.📏 How many ohms (Ω) is 7.4 kΩ?
20. 20.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
21. 21.📏 How many kilo-ohms (kΩ) is 6300 Ω? =
22. 22.True or false: the voltmeter measures current. (a) True (b) False
23. 23.True or false: the ammeter is joined across a part. (a) False (b) True
24. 24.📏 Which unit measures the push of a cell? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
25. 25.Which of these is measured in amperes (A)? (a) the flow of charge (b) how much a part resists (c) resistance (d) power
26. 26.📏 Which unit measures how much a part resists? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
27. 27.Which of these is measured in ohms (Ω)? (a) current (b) voltage (c) energy used each second (d) resistance
28. 28.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
29. 29.📏 How many kilo-ohms (kΩ) is 2100 Ω? =
30. 30.📏 Which unit measures the flow of charge? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
31. 31.Which of these is measured in volts (V)? (a) voltage (b) resistance (c) how much a part resists (d) current
32. 32.True or false: voltage is measured in volts (V). (a) True (b) False
33. 33.📏 How many watts (W) is 4.5 kW?
34. 34.📏 How many ohms (Ω) is 4.3 kΩ?
35. 35.📏 How many ohms (Ω) is 9.8 kΩ?
36. 36.Which of these is measured in ohms (Ω)? (a) energy used each second (b) the push of a cell (c) the flow of charge (d) how much a part resists
37. 37.True or false: power is measured in ohms (Ω). (a) False (b) True
38. 38.📏 How many amperes (A) is 580 mA? =
39. 39.📏 How many watts (W) is 3.5 kW?
40. 40.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1024 (c) 100 (d) 1000

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