Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 390 · 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: power is measured in watts (W). (a) False (b) True
2. 2.True or false: the voltmeter is joined in series. (a) True (b) False
3. 3.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
4. 4.📏 How many ohms (Ω) is 9.3 kΩ?
5. 5.📏 Which unit measures the push of a cell? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
6. 6.📏 How many kilo-ohms (kΩ) is 900 Ω? =
7. 7.📏 How many ohms (Ω) is 8.7 kΩ?
8. 8.True or false: the ammeter is joined across a part. (a) True (b) False
9. 9.📏 How many kilowatts (kW) is 1800 W? =
10. 10.📏 Which unit measures energy used each second? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
11. 11.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
12. 12.True or false: power is measured in volts (V). (a) False (b) True
13. 13.📏 How many kilowatts (kW) is 3300 W? =
14. 14.📏 How many kilo-ohms (kΩ) is 1400 Ω? =
15. 15.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 1000 (d) 10
16. 16.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
17. 17.📏 Which unit measures voltage? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
18. 18.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
19. 19.📏 How many kilowatts (kW) is 2750 W? =
20. 20.True or false: the ammeter is joined in series. (a) False (b) True
21. 21.Which of these is measured in amperes (A)? (a) resistance (b) voltage (c) current (d) how much a part resists
22. 22.True or false: the voltmeter is joined across a part. (a) True (b) False
23. 23.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
24. 24.📏 How many milliamperes (mA) is 2.44 A?
25. 25.Which of these is measured in amperes (A)? (a) voltage (b) energy used each second (c) how much a part resists (d) the flow of charge
26. 26.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a bigger tank (c) the flow of water (d) a narrow pipe
27. 27.📏 How many milliamperes (mA) is 1.9 A?
28. 28.📏 How many watts (W) is 2.1 kW?
29. 29.📏 How many milliamperes (mA) is 2.57 A?
30. 30.📏 How many ohms (Ω) is 5.5 kΩ?
31. 31.True or false: the ammeter measures voltage. (a) False (b) True
32. 32.True or false: power is measured in amperes (A). (a) True (b) False
33. 33.📏 How many watts (W) is 2 kW?
34. 34.📏 How many amperes (A) is 170 mA? =
35. 35.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 100 (c) 10 (d) 60
36. 36.📏 How many ohms (Ω) is 7.5 kΩ?
37. 37.Which of these is measured in volts (V)? (a) power (b) voltage (c) energy used each second (d) current
38. 38.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the pipe colour (c) the water pressure (d) a narrow pipe
39. 39.Which of these is measured in watts (W)? (a) how much a part resists (b) the push of a cell (c) current (d) energy used each second
40. 40.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) the push of a cell (c) resistance (d) power

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