Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 758 · 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: the voltmeter is joined in series. (a) True (b) False
2. 2.Which of these is measured in volts (V)? (a) how much a part resists (b) the push of a cell (c) power (d) resistance
3. 3.📏 Which unit measures voltage? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
4. 4.True or false: voltage is measured in watts (W). (a) False (b) True
5. 5.📏 How many milliamperes (mA) is 0.06 A?
6. 6.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the water pressure (c) the flow of water (d) a bigger tank
7. 7.Which of these is measured in amperes (A)? (a) how much a part resists (b) the push of a cell (c) resistance (d) current
8. 8.Which of these is measured in ohms (Ω)? (a) energy used each second (b) resistance (c) power (d) current
9. 9.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
10. 10.Which of these is measured in ohms (Ω)? (a) voltage (b) how much a part resists (c) the flow of charge (d) the push of a cell
11. 11.📏 How many ohms (Ω) is 8.4 kΩ?
12. 12.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
13. 13.📏 How many watts (W) is 2.8 kW?
14. 14.📏 Which unit measures power? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
15. 15.📏 How many kilo-ohms (kΩ) is 9200 Ω? =
16. 16.True or false: power is measured in volts (V). (a) False (b) True
17. 17.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
18. 18.📏 How many ohms (Ω) is 1.2 kΩ?
19. 19.📏 How many amperes (A) is 40 mA? =
20. 20.📏 How many ohms (Ω) is 2.3 kΩ?
21. 21.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the pipe colour (c) the water tank lid (d) the tap handle
22. 22.📏 How many watts (W) is 2.6 kW?
23. 23.True or false: current is measured in watts (W). (a) True (b) False
24. 24.📏 How many kilowatts (kW) is 1950 W? =
25. 25.True or false: the ammeter is joined in series. (a) True (b) False
26. 26.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
27. 27.📏 How many kilo-ohms (kΩ) is 500 Ω? =
28. 28.📏 How many kilo-ohms (kΩ) is 1700 Ω? =
29. 29.📏 How many milliamperes (mA) is 2.97 A?
30. 30.True or false: the voltmeter is joined across a part. (a) False (b) True
31. 31.True or false: energy used each second is measured in watts (W). (a) False (b) True
32. 32.True or false: current is measured in amperes (A). (a) True (b) False
33. 33.📏 How many watts (W) is 4.2 kW?
34. 34.Which of these is measured in watts (W)? (a) voltage (b) how much a part resists (c) energy used each second (d) the push of a cell
35. 35.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
36. 36.📏 How many milliamperes (mA) is 1.92 A?
37. 37.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
38. 38.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 60 (c) 100 (d) 10
39. 39.📏 How many amperes (A) is 1380 mA? =
40. 40.📏 How many milliamperes (mA) is 2.76 A?

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