Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 541 · 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 of these is measured in volts (V)? (a) the flow of charge (b) voltage (c) current (d) power
2. 2.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) a narrow pipe (c) the flow of water (d) the water pressure
3. 3.📏 How many milliamperes (mA) is 0.9 A?
4. 4.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
5. 5.True or false: how much a part resists is measured in amperes (A). (a) True (b) False
6. 6.📏 How many ohms (Ω) is 5.7 kΩ?
7. 7.True or false: the voltmeter measures current. (a) False (b) True
8. 8.📏 How many ohms (Ω) is 7.1 kΩ?
9. 9.True or false: the ammeter measures current. (a) False (b) True
10. 10.True or false: energy used each second is measured in volts (V). (a) True (b) False
11. 11.📏 How many kilo-ohms (kΩ) is 7900 Ω? =
12. 12.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
13. 13.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
14. 14.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
15. 15.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True
16. 16.📏 Which unit measures the push of a cell? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
17. 17.📏 How many milliamperes (mA) is 0.05 A?
18. 18.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
19. 19.True or false: the voltmeter measures voltage. (a) False (b) True
20. 20.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 10 (d) 1000
21. 21.📏 How many kilowatts (kW) is 850 W? =
22. 22.📏 How many kilowatts (kW) is 2000 W? =
23. 23.True or false: the ammeter measures voltage. (a) False (b) True
24. 24.📏 Which unit measures how much a part resists? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
25. 25.📏 Which unit measures power? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
26. 26.📏 How many kilo-ohms (kΩ) is 9900 Ω? =
27. 27.Which of these is measured in amperes (A)? (a) resistance (b) voltage (c) the push of a cell (d) the flow of charge
28. 28.📏 How many kilowatts (kW) is 3050 W? =
29. 29.📏 Which unit measures resistance? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
30. 30.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the water pressure (c) the flow of water (d) the pipe colour
31. 31.📏 How many kilo-ohms (kΩ) is 3900 Ω? =
32. 32.📏 How many kilowatts (kW) is 4100 W? =
33. 33.True or false: the voltmeter is joined across a part. (a) False (b) True
34. 34.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
35. 35.True or false: current is measured in amperes (A). (a) False (b) True
36. 36.True or false: the ammeter is joined in series. (a) False (b) True
37. 37.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
38. 38.📏 Which unit measures energy used each second? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
39. 39.📏 How many ohms (Ω) is 8 kΩ?
40. 40.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the pipe colour (c) the water pressure (d) the water tank lid

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