Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 57 · 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 voltage? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
2. 2.Which of these is measured in watts (W)? (a) voltage (b) energy used each second (c) the flow of charge (d) resistance
3. 3.True or false: voltage is measured in volts (V). (a) False (b) True
4. 4.Which of these is measured in amperes (A)? (a) how much a part resists (b) energy used each second (c) the flow of charge (d) power
5. 5.Which of these is measured in watts (W)? (a) current (b) resistance (c) power (d) voltage
6. 6.📏 How many ohms (Ω) is 4 kΩ?
7. 7.True or false: the ammeter is joined across a part. (a) False (b) True
8. 8.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the pipe colour (c) the tap handle (d) the water tank lid
9. 9.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the water pressure (c) a bigger tank (d) the flow of water
10. 10.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
11. 11.True or false: the ammeter measures voltage. (a) True (b) False
12. 12.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) the push of a cell (c) energy used each second (d) how much a part resists
13. 13.📏 How many kilowatts (kW) is 4800 W? =
14. 14.📏 Which unit measures power? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
15. 15.📏 How many milliamperes (mA) is 1.29 A?
16. 16.📏 How many amperes (A) is 940 mA? =
17. 17.Which of these is measured in volts (V)? (a) voltage (b) how much a part resists (c) the flow of charge (d) power
18. 18.📏 Which unit measures current? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
19. 19.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
20. 20.📏 How many watts (W) is 2.9 kW?
21. 21.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
22. 22.📏 How many milliamperes (mA) is 0.2 A?
23. 23.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) a narrow pipe (c) the water pressure (d) the flow of water
24. 24.📏 How many ohms (Ω) is 0.5 kΩ?
25. 25.📏 How many watts (W) is 3.5 kW?
26. 26.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
27. 27.📏 How many ohms (Ω) is 4.5 kΩ?
28. 28.True or false: resistance is measured in ohms (Ω). (a) False (b) True
29. 29.True or false: current is measured in ohms (Ω). (a) False (b) True
30. 30.📏 How many ohms (Ω) is 2.6 kΩ?
31. 31.📏 How many kilo-ohms (kΩ) is 400 Ω? =
32. 32.📏 Which unit measures the push of a cell? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
33. 33.True or false: how much a part resists is measured in watts (W). (a) False (b) True
34. 34.📏 Which unit measures the flow of charge? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
35. 35.📏 How many kilowatts (kW) is 650 W? =
36. 36.📏 Which unit measures resistance? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
37. 37.True or false: the voltmeter measures voltage. (a) False (b) True
38. 38.📏 How many ohms (Ω) is 6.2 kΩ?
39. 39.True or false: the voltmeter is joined in series. (a) True (b) False
40. 40.📏 How many amperes (A) is 1340 mA? =

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