Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 723 · 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 kilo-ohms (kΩ) is 8800 Ω? =
2. 2.True or false: the ammeter measures voltage. (a) True (b) False
3. 3.📏 How many kilowatts (kW) is 1450 W? =
4. 4.📏 How many milliamperes (mA) is 0.7 A?
5. 5.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
6. 6.True or false: the push of a cell is measured in volts (V). (a) False (b) True
7. 7.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
8. 8.True or false: the voltmeter measures current. (a) False (b) True
9. 9.True or false: how much a part resists is measured in amperes (A). (a) True (b) False
10. 10.Which of these is measured in amperes (A)? (a) the push of a cell (b) voltage (c) the flow of charge (d) power
11. 11.📏 Which unit measures the push of a cell? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
12. 12.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 60 (c) 100 (d) 1000
13. 13.True or false: the flow of charge is measured in watts (W). (a) True (b) False
14. 14.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
15. 15.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
16. 16.📏 How many watts (W) is 1.1 kW?
17. 17.📏 How many kilo-ohms (kΩ) is 3600 Ω? =
18. 18.📏 How many kilo-ohms (kΩ) is 8100 Ω? =
19. 19.True or false: current is measured in amperes (A). (a) True (b) False
20. 20.Which of these is measured in watts (W)? (a) power (b) how much a part resists (c) the flow of charge (d) resistance
21. 21.📏 How many kilo-ohms (kΩ) is 9000 Ω? =
22. 22.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) resistance (c) the flow of charge (d) current
23. 23.Which of these is measured in volts (V)? (a) the push of a cell (b) power (c) current (d) how much a part resists
24. 24.📏 How many kilowatts (kW) is 2950 W? =
25. 25.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
26. 26.True or false: the voltmeter is joined in series. (a) True (b) False
27. 27.Which of these is measured in amperes (A)? (a) power (b) how much a part resists (c) energy used each second (d) current
28. 28.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) the water pressure (c) a narrow pipe (d) a bigger tank
29. 29.📏 Which unit measures voltage? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
30. 30.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
31. 31.📏 How many amperes (A) is 770 mA? =
32. 32.📏 How many milliamperes (mA) is 2.93 A?
33. 33.📏 How many watts (W) is 4.4 kW?
34. 34.📏 How many kilowatts (kW) is 2100 W? =
35. 35.True or false: resistance is measured in watts (W). (a) True (b) False
36. 36.True or false: the ammeter is joined in series. (a) False (b) True
37. 37.True or false: the voltmeter is joined across a part. (a) True (b) False
38. 38.📏 How many milliamperes (mA) is 2.72 A?
39. 39.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the tap handle (c) the pipe colour (d) the water pressure
40. 40.📏 How many kilo-ohms (kΩ) is 8600 Ω? =

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