Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 637 · 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: the ammeter measures current. (a) True (b) False
2. 2.📏 How many ohms (Ω) is 3.4 kΩ?
3. 3.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 1000 (c) 10 (d) 100
4. 4.📏 How many milliamperes (mA) is 0.73 A?
5. 5.Which of these is measured in ohms (Ω)? (a) power (b) resistance (c) voltage (d) the flow of charge
6. 6.📏 Which unit measures power? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
7. 7.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the pipe colour (c) the water tank lid (d) the water pressure
8. 8.📏 How many milliamperes (mA) is 0.12 A?
9. 9.📏 How many ohms (Ω) is 7.1 kΩ?
10. 10.📏 How many milliamperes (mA) is 1.09 A?
11. 11.True or false: current is measured in amperes (A). (a) True (b) False
12. 12.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) a narrow pipe (c) the water pressure (d) the pipe colour
13. 13.True or false: the ammeter measures voltage. (a) False (b) True
14. 14.📏 Which unit measures the push of a cell? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
15. 15.📏 How many amperes (A) is 370 mA? =
16. 16.True or false: the voltmeter measures current. (a) True (b) False
17. 17.📏 How many kilowatts (kW) is 350 W? =
18. 18.📏 How many watts (W) is 1.6 kW?
19. 19.True or false: the voltmeter is joined across a part. (a) False (b) True
20. 20.📏 How many ohms (Ω) is 8.1 kΩ?
21. 21.📏 Which unit measures current? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
22. 22.Which of these is measured in volts (V)? (a) the flow of charge (b) the push of a cell (c) energy used each second (d) resistance
23. 23.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the water pressure (c) the flow of water (d) a bigger tank
24. 24.True or false: the ammeter is joined in series. (a) False (b) True
25. 25.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) energy used each second (c) how much a part resists (d) power
26. 26.True or false: power is measured in ohms (Ω). (a) False (b) True
27. 27.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
28. 28.True or false: the voltmeter measures voltage. (a) False (b) True
29. 29.📏 How many kilowatts (kW) is 2350 W? =
30. 30.📏 How many kilowatts (kW) is 300 W? =
31. 31.📏 How many milliamperes (mA) is 0.02 A?
32. 32.True or false: the ammeter is joined across a part. (a) False (b) True
33. 33.📏 Which unit measures how much a part resists? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
34. 34.📏 Which unit measures resistance? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
35. 35.📏 How many watts (W) is 2.2 kW?
36. 36.Which of these is measured in watts (W)? (a) power (b) voltage (c) resistance (d) the flow of charge
37. 37.📏 How many ohms (Ω) is 1.3 kΩ?
38. 38.📏 How many watts (W) is 1.7 kW?
39. 39.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
40. 40.📏 How many kilowatts (kW) is 950 W? =

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