Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 212 · 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.📏 Which unit measures voltage? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
2. 2.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
3. 3.True or false: the voltmeter is joined across a part. (a) True (b) False
4. 4.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
5. 5.True or false: voltage is measured in volts (V). (a) True (b) False
6. 6.True or false: power is measured in watts (W). (a) False (b) True
7. 7.True or false: the voltmeter is joined in series. (a) False (b) True
8. 8.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
9. 9.📏 How many kilo-ohms (kΩ) is 7000 Ω? =
10. 10.True or false: the flow of charge is measured in watts (W). (a) True (b) False
11. 11.Which of these is measured in amperes (A)? (a) current (b) how much a part resists (c) resistance (d) energy used each second
12. 12.📏 Which unit measures the flow of charge? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
13. 13.True or false: the ammeter measures voltage. (a) False (b) True
14. 14.📏 How many milliamperes (mA) is 0.43 A?
15. 15.📏 How many ohms (Ω) is 0.6 kΩ?
16. 16.📏 How many milliamperes (mA) is 2.18 A?
17. 17.📏 How many ohms (Ω) is 6.9 kΩ?
18. 18.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) a narrow pipe (c) the flow of water (d) the water pressure
19. 19.True or false: energy used each second is measured in amperes (A). (a) False (b) True
20. 20.True or false: the ammeter is joined in series. (a) True (b) False
21. 21.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 10 (d) 1000
22. 22.Which of these is measured in volts (V)? (a) resistance (b) voltage (c) current (d) the flow of charge
23. 23.📏 How many milliamperes (mA) is 1.17 A?
24. 24.True or false: current is measured in ohms (Ω). (a) False (b) True
25. 25.📏 How many ohms (Ω) is 8.2 kΩ?
26. 26.📏 How many watts (W) is 1.7 kW?
27. 27.True or false: energy used each second is measured in watts (W). (a) True (b) False
28. 28.📏 Which unit measures power? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
29. 29.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
30. 30.True or false: voltage is measured in ohms (Ω). (a) False (b) True
31. 31.True or false: the push of a cell is measured in volts (V). (a) False (b) True
32. 32.True or false: the voltmeter measures voltage. (a) True (b) False
33. 33.True or false: energy used each second is measured in volts (V). (a) True (b) False
34. 34.📏 How many amperes (A) is 1820 mA? =
35. 35.📏 How many kilowatts (kW) is 2900 W? =
36. 36.📏 How many watts (W) is 3.1 kW?
37. 37.📏 How many ohms (Ω) is 8.4 kΩ?
38. 38.📏 How many watts (W) is 3 kW?
39. 39.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a bigger tank (c) the water pressure (d) a narrow pipe
40. 40.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) power (c) how much a part resists (d) current

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