Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 391 · 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.True or false: energy used each second is measured in amperes (A). (a) True (b) False
2. 2.True or false: the ammeter measures voltage. (a) True (b) False
3. 3.Which of these is measured in volts (V)? (a) resistance (b) the push of a cell (c) energy used each second (d) the flow of charge
4. 4.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a bigger tank (c) a narrow pipe (d) the water pressure
5. 5.📏 How many ohms (Ω) is 4.1 kΩ?
6. 6.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
7. 7.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1024 (c) 100 (d) 1000
8. 8.True or false: the voltmeter is joined in series. (a) True (b) False
9. 9.Which of these is measured in watts (W)? (a) power (b) current (c) how much a part resists (d) voltage
10. 10.📏 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
11. 11.True or false: the voltmeter measures voltage. (a) False (b) True
12. 12.📏 Which unit measures resistance? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
13. 13.Which of these is measured in watts (W)? (a) the push of a cell (b) voltage (c) energy used each second (d) current
14. 14.📏 How many amperes (A) is 490 mA? =
15. 15.True or false: how much a part resists is measured in amperes (A). (a) True (b) False
16. 16.📏 How many ohms (Ω) is 0.3 kΩ?
17. 17.📏 Which unit measures current? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
18. 18.📏 How many kilowatts (kW) is 3350 W? =
19. 19.📏 Which unit measures power? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
20. 20.📏 How many amperes (A) is 1100 mA? =
21. 21.Which of these is measured in volts (V)? (a) resistance (b) energy used each second (c) voltage (d) the flow of charge
22. 22.📏 How many kilowatts (kW) is 4350 W? =
23. 23.True or false: voltage is measured in volts (V). (a) True (b) False
24. 24.True or false: the ammeter is joined across a part. (a) False (b) True
25. 25.📏 How many ohms (Ω) is 9 kΩ?
26. 26.📏 How many ohms (Ω) is 7.3 kΩ?
27. 27.📏 How many kilowatts (kW) is 750 W? =
28. 28.Which of these is measured in amperes (A)? (a) resistance (b) the push of a cell (c) energy used each second (d) the flow of charge
29. 29.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
30. 30.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
31. 31.📏 How many watts (W) is 2.9 kW?
32. 32.True or false: the voltmeter is joined across a part. (a) False (b) True
33. 33.True or false: the ammeter is joined in series. (a) True (b) False
34. 34.📏 How many watts (W) is 3.3 kW?
35. 35.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
36. 36.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
37. 37.📏 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
38. 38.📏 Which unit measures energy used each second? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
39. 39.📏 How many milliamperes (mA) is 2.18 A?
40. 40.Which of these is measured in ohms (Ω)? (a) resistance (b) power (c) voltage (d) the push of a cell

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