Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 650 · 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) resistance (c) voltage (d) the flow of charge
2. 2.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the tap handle (c) the water pressure (d) the water tank lid
3. 3.📏 How many kilowatts (kW) is 4650 W? =
4. 4.True or false: the ammeter measures voltage. (a) True (b) False
5. 5.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 60 (c) 10 (d) 1000
6. 6.Which of these is measured in ohms (Ω)? (a) voltage (b) current (c) energy used each second (d) resistance
7. 7.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True
8. 8.📏 How many amperes (A) is 110 mA? =
9. 9.True or false: the voltmeter measures voltage. (a) True (b) False
10. 10.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
11. 11.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
12. 12.True or false: the push of a cell is measured in watts (W). (a) True (b) False
13. 13.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) a narrow pipe (c) the water pressure (d) the pipe colour
14. 14.📏 How many kilo-ohms (kΩ) is 7400 Ω? =
15. 15.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
16. 16.📏 How many amperes (A) is 1440 mA? =
17. 17.📏 Which unit measures resistance? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
18. 18.True or false: power is measured in ohms (Ω). (a) True (b) False
19. 19.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
20. 20.True or false: resistance is measured in volts (V). (a) True (b) False
21. 21.True or false: the voltmeter measures current. (a) True (b) False
22. 22.📏 How many amperes (A) is 1660 mA? =
23. 23.📏 How many watts (W) is 1.5 kW?
24. 24.Which of these is measured in watts (W)? (a) resistance (b) the flow of charge (c) energy used each second (d) voltage
25. 25.True or false: resistance is measured in amperes (A). (a) False (b) True
26. 26.True or false: power is measured in watts (W). (a) False (b) True
27. 27.True or false: how much a part resists is measured in watts (W). (a) True (b) False
28. 28.📏 How many kilowatts (kW) is 2250 W? =
29. 29.True or false: the ammeter is joined across a part. (a) False (b) True
30. 30.📏 How many kilowatts (kW) is 2000 W? =
31. 31.True or false: the voltmeter is joined in series. (a) True (b) False
32. 32.Which of these is measured in amperes (A)? (a) current (b) the push of a cell (c) resistance (d) how much a part resists
33. 33.True or false: the flow of charge is measured in watts (W). (a) True (b) False
34. 34.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
35. 35.📏 How many milliamperes (mA) is 0.7 A?
36. 36.📏 How many amperes (A) is 440 mA? =
37. 37.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
38. 38.📏 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
39. 39.📏 How many amperes (A) is 2350 mA? =
40. 40.📏 How many amperes (A) is 1760 mA? =

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