Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 836 · 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.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 1000 (c) 60 (d) 10
2. 2.True or false: the ammeter is joined across a part. (a) False (b) True
3. 3.📏 How many kilowatts (kW) is 450 W? =
4. 4.True or false: the voltmeter is joined across a part. (a) False (b) True
5. 5.True or false: the ammeter is joined in series. (a) False (b) True
6. 6.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
7. 7.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) energy used each second (c) the flow of charge (d) current
8. 8.True or false: energy used each second is measured in watts (W). (a) True (b) False
9. 9.Which of these is measured in amperes (A)? (a) power (b) energy used each second (c) how much a part resists (d) the flow of charge
10. 10.Which of these is measured in ohms (Ω)? (a) resistance (b) power (c) the flow of charge (d) the push of a cell
11. 11.Which of these is measured in volts (V)? (a) resistance (b) the push of a cell (c) power (d) energy used each second
12. 12.True or false: the push of a cell is measured in volts (V). (a) True (b) False
13. 13.True or false: power is measured in volts (V). (a) False (b) True
14. 14.True or false: resistance is measured in ohms (Ω). (a) False (b) True
15. 15.📏 Which unit measures how much a part resists? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
16. 16.📏 Which unit measures voltage? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
17. 17.True or false: the ammeter measures current. (a) False (b) True
18. 18.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
19. 19.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
20. 20.📏 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
21. 21.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
22. 22.📏 How many watts (W) is 1.3 kW?
23. 23.📏 How many kilowatts (kW) is 3150 W? =
24. 24.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
25. 25.📏 How many kilo-ohms (kΩ) is 8300 Ω? =
26. 26.True or false: the voltmeter measures current. (a) True (b) False
27. 27.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the water tank lid (c) the tap handle (d) the pipe colour
28. 28.📏 How many milliamperes (mA) is 0.68 A?
29. 29.📏 How many watts (W) is 1.6 kW?
30. 30.Which of these is measured in volts (V)? (a) energy used each second (b) the flow of charge (c) voltage (d) resistance
31. 31.📏 Which unit measures the push of a cell? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
32. 32.📏 How many kilowatts (kW) is 4600 W? =
33. 33.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the pipe colour (c) a narrow pipe (d) the flow of water
34. 34.📏 How many milliamperes (mA) is 2.38 A?
35. 35.📏 Which unit measures power? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
36. 36.True or false: resistance is measured in volts (V). (a) False (b) True
37. 37.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
38. 38.📏 How many kilo-ohms (kΩ) is 2300 Ω? =
39. 39.True or false: current is measured in watts (W). (a) False (b) True
40. 40.True or false: the voltmeter is joined in series. (a) True (b) False

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