Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 549 · 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 resistance? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
2. 2.True or false: the voltmeter is joined across a part. (a) False (b) True
3. 3.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
4. 4.📏 Which unit measures current? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
5. 5.True or false: voltage is measured in volts (V). (a) True (b) False
6. 6.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 100 (c) 1024 (d) 1000
7. 7.📏 How many kilo-ohms (kΩ) is 7800 Ω? =
8. 8.Which of these is measured in watts (W)? (a) the flow of charge (b) resistance (c) power (d) current
9. 9.True or false: the voltmeter measures voltage. (a) False (b) True
10. 10.📏 How many amperes (A) is 470 mA? =
11. 11.📏 How many kilo-ohms (kΩ) is 5600 Ω? =
12. 12.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
13. 13.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the tap handle (c) the pipe colour (d) the water tank lid
14. 14.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a bigger tank (c) a narrow pipe (d) the water pressure
15. 15.📏 How many milliamperes (mA) is 0.35 A?
16. 16.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
17. 17.📏 Which unit measures how much a part resists? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
18. 18.Which of these is measured in amperes (A)? (a) energy used each second (b) voltage (c) the flow of charge (d) resistance
19. 19.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
20. 20.Which of these is measured in watts (W)? (a) energy used each second (b) the push of a cell (c) voltage (d) current
21. 21.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the flow of water (c) the pipe colour (d) a narrow pipe
22. 22.📏 How many watts (W) is 4.5 kW?
23. 23.Which of these is measured in volts (V)? (a) energy used each second (b) resistance (c) voltage (d) power
24. 24.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
25. 25.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 60 (d) 1000
26. 26.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
27. 27.True or false: resistance is measured in volts (V). (a) True (b) False
28. 28.📏 How many milliamperes (mA) is 1.44 A?
29. 29.📏 How many amperes (A) is 2580 mA? =
30. 30.📏 How many ohms (Ω) is 5.1 kΩ?
31. 31.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
32. 32.Which of these is measured in amperes (A)? (a) current (b) the push of a cell (c) voltage (d) resistance
33. 33.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
34. 34.True or false: the ammeter measures voltage. (a) True (b) False
35. 35.📏 How many ohms (Ω) is 6 kΩ?
36. 36.True or false: the voltmeter is joined in series. (a) True (b) False
37. 37.True or false: the ammeter is joined in series. (a) True (b) False
38. 38.True or false: current is measured in amperes (A). (a) True (b) False
39. 39.📏 How many ohms (Ω) is 1.7 kΩ?
40. 40.📏 How many milliamperes (mA) is 1.11 A?

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