Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 554 · 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 voltage? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
2. 2.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the pipe colour (d) the water pressure
3. 3.📏 Which unit measures resistance? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
4. 4.Which of these is measured in volts (V)? (a) energy used each second (b) the push of a cell (c) how much a part resists (d) the flow of charge
5. 5.📏 Which unit measures the push of a cell? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
6. 6.True or false: the voltmeter is joined across a part. (a) True (b) False
7. 7.📏 Which unit measures how much a part resists? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
8. 8.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
9. 9.📏 How many watts (W) is 3.1 kW?
10. 10.📏 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
11. 11.📏 How many ohms (Ω) is 0.1 kΩ?
12. 12.Which of these is measured in watts (W)? (a) the flow of charge (b) how much a part resists (c) the push of a cell (d) power
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: how much a part resists is measured in ohms (Ω). (a) True (b) False
15. 15.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
16. 16.📏 Which unit measures power? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
17. 17.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
18. 18.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
19. 19.True or false: the ammeter measures voltage. (a) True (b) False
20. 20.Which of these is measured in volts (V)? (a) how much a part resists (b) the flow of charge (c) voltage (d) energy used each second
21. 21.📏 How many kilo-ohms (kΩ) is 4000 Ω? =
22. 22.📏 How many kilo-ohms (kΩ) is 1000 Ω? =
23. 23.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
24. 24.📏 How many ohms (Ω) is 0.4 kΩ?
25. 25.📏 How many watts (W) is 3.5 kW?
26. 26.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) a narrow pipe (c) the pipe colour (d) the flow of water
27. 27.True or false: the ammeter is joined across a part. (a) False (b) True
28. 28.Which of these is measured in ohms (Ω)? (a) energy used each second (b) current (c) resistance (d) the flow of charge
29. 29.📏 How many milliamperes (mA) is 1.64 A?
30. 30.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 1000 (d) 10
31. 31.📏 Which unit measures energy used each second? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
32. 32.📏 How many milliamperes (mA) is 0.41 A?
33. 33.📏 How many milliamperes (mA) is 0.05 A?
34. 34.True or false: resistance is measured in amperes (A). (a) False (b) True
35. 35.📏 How many kilo-ohms (kΩ) is 1300 Ω? =
36. 36.True or false: the ammeter is joined in series. (a) True (b) False
37. 37.📏 How many kilowatts (kW) is 4600 W? =
38. 38.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 60 (c) 1000 (d) 10
39. 39.True or false: current is measured in amperes (A). (a) False (b) True
40. 40.📏 How many kilowatts (kW) is 200 W? =

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