Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 956 · 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) power (b) the push of a cell (c) energy used each second (d) how much a part resists
2. 2.📏 How many kilowatts (kW) is 3750 W? =
3. 3.True or false: how much a part resists is measured in watts (W). (a) True (b) False
4. 4.📏 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
5. 5.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a bigger tank (c) the flow of water (d) a narrow pipe
6. 6.📏 Which unit measures resistance? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
7. 7.📏 Which unit measures the flow of charge? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
8. 8.True or false: the voltmeter is joined in series. (a) True (b) False
9. 9.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
10. 10.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
11. 11.Which of these is measured in amperes (A)? (a) how much a part resists (b) the push of a cell (c) resistance (d) the flow of charge
12. 12.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
13. 13.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
14. 14.Which of these is measured in watts (W)? (a) current (b) how much a part resists (c) energy used each second (d) the flow of charge
15. 15.📏 How many kilo-ohms (kΩ) is 100 Ω? =
16. 16.📏 How many ohms (Ω) is 6.7 kΩ?
17. 17.True or false: the push of a cell is measured in volts (V). (a) False (b) True
18. 18.True or false: voltage is measured in volts (V). (a) True (b) False
19. 19.📏 How many ohms (Ω) is 0.3 kΩ?
20. 20.📏 Which unit measures current? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
21. 21.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
22. 22.True or false: power is measured in watts (W). (a) True (b) False
23. 23.Which of these is measured in ohms (Ω)? (a) power (b) voltage (c) resistance (d) the push of a cell
24. 24.📏 How many amperes (A) is 2380 mA? =
25. 25.📏 How many ohms (Ω) is 3 kΩ?
26. 26.True or false: the push of a cell is measured in watts (W). (a) False (b) True
27. 27.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 10 (d) 1000
28. 28.True or false: the voltmeter is joined across a part. (a) True (b) False
29. 29.📏 How many watts (W) is 1.7 kW?
30. 30.True or false: the ammeter measures voltage. (a) False (b) True
31. 31.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the flow of water (c) a narrow pipe (d) the pipe colour
32. 32.📏 How many amperes (A) is 450 mA? =
33. 33.📏 How many amperes (A) is 1460 mA? =
34. 34.True or false: the ammeter is joined in series. (a) False (b) True
35. 35.📏 Which unit measures power? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
36. 36.True or false: the ammeter is joined across a part. (a) False (b) True
37. 37.Which of these is measured in ohms (Ω)? (a) power (b) voltage (c) the flow of charge (d) how much a part resists
38. 38.📏 How many amperes (A) is 2530 mA? =
39. 39.True or false: current is measured in amperes (A). (a) False (b) True
40. 40.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 60 (c) 1000 (d) 10

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