Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 913 · 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 the flow of charge? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
2. 2.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 10 (c) 100 (d) 1024
3. 3.📏 Which unit measures power? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
4. 4.Which of these is measured in watts (W)? (a) energy used each second (b) voltage (c) the flow of charge (d) how much a part resists
5. 5.📏 How many milliamperes (mA) is 0.12 A?
6. 6.📏 Which unit measures voltage? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
7. 7.📏 How many ohms (Ω) is 6.4 kΩ?
8. 8.True or false: the ammeter measures voltage. (a) False (b) True
9. 9.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a narrow pipe (c) a bigger tank (d) the water pressure
10. 10.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
11. 11.True or false: the ammeter is joined across a part. (a) True (b) False
12. 12.True or false: voltage is measured in volts (V). (a) False (b) True
13. 13.📏 How many kilowatts (kW) is 700 W? =
14. 14.📏 Which unit measures the push of a cell? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
15. 15.True or false: the voltmeter is joined in series. (a) False (b) True
16. 16.📏 How many milliamperes (mA) is 2.18 A?
17. 17.Which of these is measured in ohms (Ω)? (a) power (b) energy used each second (c) resistance (d) the flow of charge
18. 18.Which of these is measured in volts (V)? (a) resistance (b) voltage (c) current (d) energy used each second
19. 19.True or false: power is measured in watts (W). (a) True (b) False
20. 20.Which of these is measured in amperes (A)? (a) voltage (b) the flow of charge (c) resistance (d) power
21. 21.📏 How many milliamperes (mA) is 2.72 A?
22. 22.📏 How many kilo-ohms (kΩ) is 9200 Ω? =
23. 23.📏 How many milliamperes (mA) is 0.18 A?
24. 24.📏 Which unit measures energy used each second? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
25. 25.True or false: the ammeter is joined in series. (a) False (b) True
26. 26.True or false: the voltmeter is joined across a part. (a) False (b) True
27. 27.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
28. 28.📏 Which unit measures resistance? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
29. 29.Which of these is measured in amperes (A)? (a) current (b) how much a part resists (c) energy used each second (d) the push of a cell
30. 30.📏 How many amperes (A) is 740 mA? =
31. 31.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
32. 32.📏 How many amperes (A) is 2360 mA? =
33. 33.📏 How many amperes (A) is 1400 mA? =
34. 34.📏 How many kilo-ohms (kΩ) is 6700 Ω? =
35. 35.True or false: current is measured in amperes (A). (a) False (b) True
36. 36.True or false: the voltmeter measures current. (a) True (b) False
37. 37.True or false: the flow of charge is measured in volts (V). (a) False (b) True
38. 38.📏 How many watts (W) is 1 kW?
39. 39.Which of these is measured in ohms (Ω)? (a) current (b) how much a part resists (c) voltage (d) the push of a cell
40. 40.True or false: power is measured in volts (V). (a) False (b) True

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