Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 862 · 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: current is measured in ohms (Ω). (a) False (b) True
2. 2.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
3. 3.📏 Which unit measures power? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
4. 4.📏 How many kilo-ohms (kΩ) is 6100 Ω? =
5. 5.Which of these is measured in volts (V)? (a) energy used each second (b) voltage (c) current (d) how much a part resists
6. 6.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the tap handle (c) the water pressure (d) the pipe colour
7. 7.Which of these is measured in watts (W)? (a) current (b) energy used each second (c) the push of a cell (d) the flow of charge
8. 8.Which of these is measured in amperes (A)? (a) current (b) the push of a cell (c) voltage (d) how much a part resists
9. 9.📏 How many watts (W) is 1.6 kW?
10. 10.📏 How many watts (W) is 3 kW?
11. 11.📏 How many kilowatts (kW) is 3150 W? =
12. 12.📏 How many kilo-ohms (kΩ) is 8200 Ω? =
13. 13.Which of these is measured in ohms (Ω)? (a) energy used each second (b) resistance (c) voltage (d) the push of a cell
14. 14.True or false: the flow of charge is measured in watts (W). (a) True (b) False
15. 15.📏 How many ohms (Ω) is 7.4 kΩ?
16. 16.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
17. 17.📏 How many milliamperes (mA) is 2.98 A?
18. 18.📏 Which unit measures current? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
19. 19.📏 How many kilowatts (kW) is 4800 W? =
20. 20.📏 Which unit measures resistance? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
21. 21.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
22. 22.True or false: the push of a cell is measured in volts (V). (a) False (b) True
23. 23.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
24. 24.📏 How many milliamperes (mA) is 2.3 A?
25. 25.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
26. 26.True or false: the voltmeter measures current. (a) True (b) False
27. 27.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
28. 28.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 60 (c) 10 (d) 1000
29. 29.Which of these is measured in ohms (Ω)? (a) power (b) the push of a cell (c) current (d) how much a part resists
30. 30.Which of these is measured in watts (W)? (a) power (b) voltage (c) resistance (d) the push of a cell
31. 31.📏 How many ohms (Ω) is 5 kΩ?
32. 32.📏 How many kilowatts (kW) is 3450 W? =
33. 33.True or false: the ammeter is joined in series. (a) True (b) False
34. 34.Which of these is measured in volts (V)? (a) current (b) the flow of charge (c) the push of a cell (d) energy used each second
35. 35.📏 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
36. 36.📏 How many ohms (Ω) is 7.1 kΩ?
37. 37.True or false: the ammeter is joined across a part. (a) True (b) False
38. 38.📏 How many amperes (A) is 1120 mA? =
39. 39.True or false: the ammeter measures current. (a) False (b) True
40. 40.📏 How many amperes (A) is 70 mA? =

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