Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 257 · 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 energy used each second? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
2. 2.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
3. 3.📏 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
4. 4.Which of these is measured in amperes (A)? (a) current (b) voltage (c) resistance (d) how much a part resists
5. 5.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
6. 6.Which of these is measured in ohms (Ω)? (a) voltage (b) resistance (c) power (d) the push of a cell
7. 7.True or false: the push of a cell is measured in watts (W). (a) True (b) False
8. 8.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
9. 9.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
10. 10.Which of these is measured in volts (V)? (a) the push of a cell (b) energy used each second (c) the flow of charge (d) resistance
11. 11.📏 How many ohms (Ω) is 2.2 kΩ?
12. 12.📏 How many amperes (A) is 1650 mA? =
13. 13.📏 Which unit measures the flow of charge? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
14. 14.True or false: current is measured in ohms (Ω). (a) True (b) False
15. 15.True or false: the voltmeter is joined across a part. (a) True (b) False
16. 16.📏 How many milliamperes (mA) is 0.36 A?
17. 17.📏 How many amperes (A) is 2950 mA? =
18. 18.📏 Which unit measures resistance? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
19. 19.📏 Which unit measures voltage? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
20. 20.True or false: the ammeter measures voltage. (a) True (b) False
21. 21.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
22. 22.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
23. 23.📏 Which unit measures power? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
24. 24.Which of these is measured in amperes (A)? (a) voltage (b) power (c) the flow of charge (d) resistance
25. 25.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True
26. 26.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 60 (c) 1000 (d) 100
27. 27.📏 How many ohms (Ω) is 1.2 kΩ?
28. 28.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
29. 29.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
30. 30.📏 How many kilo-ohms (kΩ) is 1200 Ω? =
31. 31.📏 How many watts (W) is 3.7 kW?
32. 32.True or false: the flow of charge is measured in watts (W). (a) True (b) False
33. 33.📏 How many kilowatts (kW) is 3050 W? =
34. 34.📏 How many watts (W) is 2.8 kW?
35. 35.📏 How many kilo-ohms (kΩ) is 3000 Ω? =
36. 36.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water pressure (c) the water tank lid (d) the pipe colour
37. 37.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1024 (d) 1000
38. 38.True or false: the voltmeter is joined in series. (a) False (b) True
39. 39.📏 How many kilowatts (kW) is 2450 W? =
40. 40.True or false: current is measured in amperes (A). (a) True (b) False

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