Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 485 · 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: voltage is measured in volts (V). (a) True (b) False
2. 2.📏 How many watts (W) is 2.7 kW?
3. 3.True or false: voltage is measured in amperes (A). (a) True (b) False
4. 4.True or false: the voltmeter is joined across a part. (a) True (b) False
5. 5.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
6. 6.Which of these is measured in ohms (Ω)? (a) resistance (b) voltage (c) power (d) energy used each second
7. 7.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) a narrow pipe (c) the pipe colour (d) the water pressure
8. 8.📏 How many watts (W) is 1.2 kW?
9. 9.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
10. 10.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
11. 11.📏 How many milliamperes (mA) is 1.91 A?
12. 12.True or false: the ammeter measures voltage. (a) True (b) False
13. 13.True or false: resistance is measured in volts (V). (a) True (b) False
14. 14.True or false: resistance is measured in watts (W). (a) True (b) False
15. 15.True or false: the ammeter measures current. (a) False (b) True
16. 16.📏 How many kilowatts (kW) is 1750 W? =
17. 17.True or false: the voltmeter is joined in series. (a) True (b) False
18. 18.📏 How many milliamperes (mA) is 1.98 A?
19. 19.📏 How many kilowatts (kW) is 1250 W? =
20. 20.📏 How many milliamperes (mA) is 1.03 A?
21. 21.True or false: the ammeter is joined across a part. (a) False (b) True
22. 22.📏 How many kilowatts (kW) is 1900 W? =
23. 23.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 10 (c) 1000 (d) 100
24. 24.Which of these is measured in watts (W)? (a) energy used each second (b) resistance (c) voltage (d) the push of a cell
25. 25.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the flow of water (c) a narrow pipe (d) the water pressure
26. 26.📏 Which unit measures power? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
27. 27.📏 Which unit measures current? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
28. 28.Which of these is measured in volts (V)? (a) energy used each second (b) voltage (c) current (d) how much a part resists
29. 29.📏 How many kilo-ohms (kΩ) is 2200 Ω? =
30. 30.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
31. 31.📏 How many kilowatts (kW) is 350 W? =
32. 32.📏 Which unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
33. 33.📏 How many kilo-ohms (kΩ) is 6200 Ω? =
34. 34.True or false: power is measured in amperes (A). (a) True (b) False
35. 35.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
36. 36.Which of these is measured in volts (V)? (a) how much a part resists (b) current (c) resistance (d) the push of a cell
37. 37.True or false: the flow of charge is measured in watts (W). (a) False (b) True
38. 38.📏 How many watts (W) is 4.6 kW?
39. 39.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
40. 40.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the pipe colour (c) the water pressure (d) the tap handle

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