Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 454 · 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.📏 How many kilowatts (kW) is 4850 W? =
2. 2.True or false: the voltmeter is joined across a part. (a) True (b) False
3. 3.True or false: the voltmeter is joined in series. (a) True (b) False
4. 4.📏 How many watts (W) is 4.2 kW?
5. 5.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the flow of water (c) the water pressure (d) a bigger tank
6. 6.Which of these is measured in watts (W)? (a) the push of a cell (b) current (c) voltage (d) power
7. 7.📏 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
8. 8.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
9. 9.📏 Which unit measures resistance? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
10. 10.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 60 (c) 10 (d) 1000
11. 11.True or false: voltage is measured in volts (V). (a) True (b) False
12. 12.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1024 (c) 1000 (d) 100
13. 13.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
14. 14.True or false: the ammeter measures current. (a) False (b) True
15. 15.📏 How many kilo-ohms (kΩ) is 8100 Ω? =
16. 16.📏 Which unit measures the push of a cell? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
17. 17.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
18. 18.📏 How many watts (W) is 2.4 kW?
19. 19.Which of these is measured in ohms (Ω)? (a) energy used each second (b) voltage (c) how much a part resists (d) current
20. 20.Which of these is measured in volts (V)? (a) energy used each second (b) the push of a cell (c) the flow of charge (d) resistance
21. 21.📏 Which unit measures the flow of charge? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
22. 22.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the pipe colour (c) the flow of water (d) the water pressure
23. 23.📏 How many watts (W) is 3.1 kW?
24. 24.True or false: voltage is measured in amperes (A). (a) True (b) False
25. 25.📏 Which unit measures how much a part resists? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
26. 26.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
27. 27.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True
28. 28.📏 How many ohms (Ω) is 8.1 kΩ?
29. 29.True or false: the ammeter is joined in series. (a) False (b) True
30. 30.Which of these is measured in volts (V)? (a) current (b) voltage (c) how much a part resists (d) energy used each second
31. 31.Which of these is measured in ohms (Ω)? (a) voltage (b) power (c) resistance (d) the push of a cell
32. 32.📏 How many kilo-ohms (kΩ) is 5900 Ω? =
33. 33.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
34. 34.📏 How many amperes (A) is 2140 mA? =
35. 35.Which of these is measured in watts (W)? (a) energy used each second (b) the push of a cell (c) voltage (d) the flow of charge
36. 36.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
37. 37.📏 How many amperes (A) is 1670 mA? =
38. 38.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
39. 39.True or false: the voltmeter measures voltage. (a) False (b) True
40. 40.📏 How many amperes (A) is 2320 mA? =

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