Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 428 · 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 amperes (A). (a) False (b) True
2. 2.📏 How many kilowatts (kW) is 4500 W? =
3. 3.📏 Which unit measures energy used each second? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
4. 4.📏 How many milliamperes (mA) is 1.65 A?
5. 5.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
6. 6.True or false: the ammeter is joined across a part. (a) True (b) False
7. 7.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 60 (c) 1000 (d) 10
8. 8.True or false: the ammeter is joined in series. (a) True (b) False
9. 9.📏 How many watts (W) is 2.4 kW?
10. 10.Which of these is measured in ohms (Ω)? (a) power (b) resistance (c) energy used each second (d) the push of a cell
11. 11.📏 How many watts (W) is 4.4 kW?
12. 12.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
13. 13.📏 Which unit measures the push of a cell? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
14. 14.📏 How many ohms (Ω) is 9.4 kΩ?
15. 15.📏 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
16. 16.📏 How many kilowatts (kW) is 3700 W? =
17. 17.📏 How many kilo-ohms (kΩ) is 4200 Ω? =
18. 18.True or false: power is measured in watts (W). (a) False (b) True
19. 19.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
20. 20.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 100 (c) 10 (d) 1024
21. 21.Which of these is measured in amperes (A)? (a) resistance (b) power (c) the flow of charge (d) voltage
22. 22.Which of these is measured in volts (V)? (a) energy used each second (b) the flow of charge (c) resistance (d) the push of a cell
23. 23.📏 How many watts (W) is 2 kW?
24. 24.📏 How many watts (W) is 1.8 kW?
25. 25.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the water pressure (d) the pipe colour
26. 26.True or false: the ammeter measures voltage. (a) False (b) True
27. 27.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
28. 28.📏 How many milliamperes (mA) is 0.47 A?
29. 29.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the pipe colour (c) a narrow pipe (d) the water pressure
30. 30.True or false: resistance is measured in ohms (Ω). (a) True (b) False
31. 31.📏 How many kilo-ohms (kΩ) is 1100 Ω? =
32. 32.True or false: the ammeter measures current. (a) False (b) True
33. 33.True or false: the push of a cell is measured in watts (W). (a) True (b) False
34. 34.Which of these is measured in amperes (A)? (a) energy used each second (b) current (c) how much a part resists (d) power
35. 35.True or false: the voltmeter is joined in series. (a) False (b) True
36. 36.True or false: the voltmeter measures current. (a) True (b) False
37. 37.True or false: the voltmeter is joined across a part. (a) False (b) True
38. 38.True or false: how much a part resists is measured in volts (V). (a) False (b) True
39. 39.📏 How many kilowatts (kW) is 1800 W? =
40. 40.📏 How many kilo-ohms (kΩ) is 6100 Ω? =

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