Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 840 · 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, resistance is like … (a) the flow of water (b) a bigger tank (c) the water pressure (d) a narrow pipe
2. 2.📏 How many milliamperes (mA) is 0.3 A?
3. 3.Which of these is measured in amperes (A)? (a) voltage (b) resistance (c) how much a part resists (d) the flow of charge
4. 4.📏 How many milliamperes (mA) is 0.15 A?
5. 5.True or false: how much a part resists is measured in watts (W). (a) False (b) True
6. 6.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 1000 (c) 10 (d) 100
7. 7.📏 How many kilowatts (kW) is 1550 W? =
8. 8.True or false: the voltmeter is joined in series. (a) True (b) False
9. 9.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 10 (c) 100 (d) 1000
10. 10.📏 How many ohms (Ω) is 2.8 kΩ?
11. 11.Which of these is measured in watts (W)? (a) power (b) the push of a cell (c) current (d) resistance
12. 12.True or false: energy used each second is measured in watts (W). (a) False (b) True
13. 13.📏 How many amperes (A) is 520 mA? =
14. 14.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water tank lid (c) the tap handle (d) the water pressure
15. 15.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
16. 16.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
17. 17.📏 Which unit measures resistance? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
18. 18.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
19. 19.True or false: the ammeter is joined across a part. (a) False (b) True
20. 20.📏 How many watts (W) is 3.8 kW?
21. 21.Which of these is measured in watts (W)? (a) resistance (b) the flow of charge (c) energy used each second (d) how much a part resists
22. 22.📏 How many kilowatts (kW) is 3950 W? =
23. 23.📏 How many milliamperes (mA) is 1.21 A?
24. 24.📏 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
25. 25.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
26. 26.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
27. 27.📏 How many watts (W) is 4.1 kW?
28. 28.📏 How many amperes (A) is 1130 mA? =
29. 29.Which of these is measured in ohms (Ω)? (a) current (b) energy used each second (c) how much a part resists (d) voltage
30. 30.Which of these is measured in amperes (A)? (a) power (b) how much a part resists (c) energy used each second (d) current
31. 31.True or false: power is measured in watts (W). (a) False (b) True
32. 32.📏 How many amperes (A) is 1050 mA? =
33. 33.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
34. 34.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
35. 35.📏 How many milliamperes (mA) is 2.01 A?
36. 36.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
37. 37.📏 How many ohms (Ω) is 9.4 kΩ?
38. 38.True or false: the ammeter measures voltage. (a) True (b) False
39. 39.📏 How many milliamperes (mA) is 0.84 A?
40. 40.📏 Which unit measures energy used each second? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)

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