Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 495 · 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.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the pipe colour (c) the flow of water (d) a narrow pipe
2. 2.📏 Which unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
3. 3.📏 How many ohms (Ω) is 7 kΩ?
4. 4.True or false: how much a part resists is measured in watts (W). (a) True (b) False
5. 5.Which of these is measured in watts (W)? (a) power (b) resistance (c) current (d) how much a part resists
6. 6.📏 How many watts (W) is 3.5 kW?
7. 7.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 1000 (d) 100
8. 8.📏 Which unit measures voltage? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
9. 9.📏 How many milliamperes (mA) is 3 A?
10. 10.📏 Which unit measures power? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
11. 11.Which of these is measured in ohms (Ω)? (a) energy used each second (b) voltage (c) the push of a cell (d) resistance
12. 12.📏 How many amperes (A) is 1210 mA? =
13. 13.Which of these is measured in amperes (A)? (a) voltage (b) how much a part resists (c) resistance (d) current
14. 14.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1000 (c) 1024 (d) 10
15. 15.📏 How many watts (W) is 2 kW?
16. 16.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
17. 17.True or false: the voltmeter is joined in series. (a) True (b) False
18. 18.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
19. 19.Which of these is measured in volts (V)? (a) the flow of charge (b) resistance (c) how much a part resists (d) voltage
20. 20.📏 Which unit measures energy used each second? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
21. 21.Which of these is measured in ohms (Ω)? (a) voltage (b) current (c) how much a part resists (d) the push of a cell
22. 22.📏 Which unit measures current? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
23. 23.Which of these is measured in volts (V)? (a) current (b) the flow of charge (c) power (d) the push of a cell
24. 24.📏 How many kilo-ohms (kΩ) is 4600 Ω? =
25. 25.True or false: the ammeter measures voltage. (a) False (b) True
26. 26.True or false: current is measured in amperes (A). (a) True (b) False
27. 27.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a narrow pipe (c) a bigger tank (d) the flow of water
28. 28.True or false: the flow of charge is measured in volts (V). (a) True (b) False
29. 29.📏 How many ohms (Ω) is 10 kΩ?
30. 30.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
31. 31.📏 How many watts (W) is 4.9 kW?
32. 32.True or false: the ammeter is joined across a part. (a) False (b) True
33. 33.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the pipe colour (c) the water tank lid (d) the tap handle
34. 34.📏 Which unit measures the push of a cell? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
35. 35.True or false: the voltmeter is joined across a part. (a) True (b) False
36. 36.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
37. 37.True or false: the voltmeter measures current. (a) True (b) False
38. 38.📏 How many kilowatts (kW) is 100 W? =
39. 39.True or false: voltage is measured in amperes (A). (a) False (b) True
40. 40.📏 How many watts (W) is 2.8 kW?

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