Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 358 · 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 unit measures the flow of charge? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
2. 2.📏 How many kilo-ohms (kΩ) is 2600 Ω? =
3. 3.📏 How many watts (W) is 2.2 kW?
4. 4.📏 Which unit measures voltage? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
5. 5.📏 How many kilo-ohms (kΩ) is 2100 Ω? =
6. 6.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the flow of water (c) a bigger tank (d) the water pressure
7. 7.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
8. 8.True or false: the ammeter is joined in series. (a) True (b) False
9. 9.True or false: the push of a cell is measured in volts (V). (a) False (b) True
10. 10.📏 Which unit measures power? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
11. 11.📏 How many milliamperes (mA) is 0.4 A?
12. 12.📏 Which unit measures how much a part resists? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
13. 13.Which of these is measured in amperes (A)? (a) energy used each second (b) power (c) current (d) resistance
14. 14.True or false: the ammeter is joined across a part. (a) False (b) True
15. 15.📏 How many ohms (Ω) is 4.7 kΩ?
16. 16.📏 How many amperes (A) is 1510 mA? =
17. 17.📏 How many kilo-ohms (kΩ) is 2000 Ω? =
18. 18.📏 How many ohms (Ω) is 7.8 kΩ?
19. 19.Which of these is measured in amperes (A)? (a) voltage (b) the push of a cell (c) the flow of charge (d) power
20. 20.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
21. 21.📏 How many amperes (A) is 970 mA? =
22. 22.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
23. 23.📏 How many kilo-ohms (kΩ) is 6100 Ω? =
24. 24.Which of these is measured in volts (V)? (a) resistance (b) current (c) power (d) voltage
25. 25.📏 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
26. 26.Which of these is measured in ohms (Ω)? (a) voltage (b) power (c) current (d) resistance
27. 27.True or false: the voltmeter is joined in series. (a) False (b) True
28. 28.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 1000 (d) 60
29. 29.📏 How many milliamperes (mA) is 1.72 A?
30. 30.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
31. 31.📏 How many kilowatts (kW) is 4450 W? =
32. 32.Which of these is measured in watts (W)? (a) the push of a cell (b) energy used each second (c) current (d) voltage
33. 33.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
34. 34.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
35. 35.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
36. 36.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 10 (d) 1000
37. 37.📏 Which unit measures current? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
38. 38.📏 How many kilowatts (kW) is 150 W? =
39. 39.📏 Which unit measures the push of a cell? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
40. 40.True or false: the voltmeter measures voltage. (a) False (b) True

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