Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 520 · 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) the flow of charge (b) voltage (c) power (d) energy used each second
2. 2.True or false: the ammeter is joined in series. (a) False (b) True
3. 3.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the water pressure (c) the pipe colour (d) the tap handle
4. 4.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
5. 5.True or false: power is measured in amperes (A). (a) False (b) True
6. 6.📏 How many milliamperes (mA) is 0.33 A?
7. 7.Which of these is measured in amperes (A)? (a) resistance (b) energy used each second (c) voltage (d) current
8. 8.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
9. 9.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
10. 10.True or false: energy used each second is measured in amperes (A). (a) False (b) True
11. 11.📏 How many milliamperes (mA) is 0.64 A?
12. 12.📏 How many ohms (Ω) is 2.7 kΩ?
13. 13.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 1000 (c) 10 (d) 60
14. 14.📏 How many milliamperes (mA) is 1.89 A?
15. 15.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) a narrow pipe (c) the water pressure (d) the pipe colour
16. 16.📏 How many kilo-ohms (kΩ) is 4800 Ω? =
17. 17.📏 How many milliamperes (mA) is 0.68 A?
18. 18.True or false: resistance is measured in amperes (A). (a) True (b) False
19. 19.Which of these is measured in ohms (Ω)? (a) energy used each second (b) voltage (c) the push of a cell (d) resistance
20. 20.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
21. 21.📏 How many ohms (Ω) is 6.1 kΩ?
22. 22.📏 How many kilo-ohms (kΩ) is 9800 Ω? =
23. 23.True or false: the voltmeter is joined across a part. (a) False (b) True
24. 24.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
25. 25.True or false: the ammeter measures voltage. (a) False (b) True
26. 26.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
27. 27.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
28. 28.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
29. 29.True or false: the ammeter is joined across a part. (a) False (b) True
30. 30.True or false: voltage is measured in volts (V). (a) False (b) True
31. 31.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
32. 32.📏 How many watts (W) is 0.2 kW?
33. 33.True or false: the voltmeter is joined in series. (a) True (b) False
34. 34.True or false: the voltmeter measures voltage. (a) True (b) False
35. 35.📏 How many milliamperes (mA) is 1.96 A?
36. 36.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
37. 37.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a narrow pipe (c) the flow of water (d) a bigger tank
38. 38.📏 Which unit measures energy used each second? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
39. 39.True or false: power is measured in watts (W). (a) False (b) True
40. 40.📏 How many ohms (Ω) is 2.3 kΩ?

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