Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 476 · 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: resistance is measured in ohms (Ω). (a) False (b) True
2. 2.📏 How many amperes (A) is 50 mA? =
3. 3.📏 How many amperes (A) is 200 mA? =
4. 4.Which of these is measured in watts (W)? (a) the flow of charge (b) energy used each second (c) resistance (d) voltage
5. 5.📏 How many watts (W) is 3.3 kW?
6. 6.📏 How many amperes (A) is 1110 mA? =
7. 7.Which of these is measured in watts (W)? (a) power (b) current (c) the push of a cell (d) resistance
8. 8.📏 How many kilowatts (kW) is 800 W? =
9. 9.📏 How many kilo-ohms (kΩ) is 2400 Ω? =
10. 10.📏 How many amperes (A) is 2090 mA? =
11. 11.Which of these is measured in amperes (A)? (a) energy used each second (b) how much a part resists (c) the flow of charge (d) resistance
12. 12.True or false: voltage is measured in ohms (Ω). (a) True (b) False
13. 13.True or false: the ammeter is joined in series. (a) True (b) False
14. 14.📏 How many amperes (A) is 2640 mA? =
15. 15.📏 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
16. 16.📏 Which unit measures the push of a cell? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
17. 17.📏 How many watts (W) is 1 kW?
18. 18.📏 How many milliamperes (mA) is 0.31 A?
19. 19.📏 How many kilo-ohms (kΩ) is 7300 Ω? =
20. 20.Which of these is measured in ohms (Ω)? (a) energy used each second (b) voltage (c) resistance (d) current
21. 21.📏 How many ohms (Ω) is 1 kΩ?
22. 22.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) the flow of water (d) a narrow pipe
23. 23.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
24. 24.📏 How many amperes (A) is 2740 mA? =
25. 25.📏 Which unit measures resistance? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
26. 26.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
27. 27.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
28. 28.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
29. 29.📏 How many milliamperes (mA) is 0.18 A?
30. 30.True or false: the push of a cell is measured in volts (V). (a) False (b) True
31. 31.📏 How many ohms (Ω) is 9 kΩ?
32. 32.📏 How many amperes (A) is 1300 mA? =
33. 33.True or false: the voltmeter measures current. (a) False (b) True
34. 34.True or false: the flow of charge is measured in volts (V). (a) False (b) True
35. 35.True or false: the voltmeter is joined across a part. (a) True (b) False
36. 36.Which of these is measured in amperes (A)? (a) resistance (b) voltage (c) power (d) current
37. 37.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 10 (c) 100 (d) 60
38. 38.📏 How many milliamperes (mA) is 0.67 A?
39. 39.True or false: current is measured in amperes (A). (a) True (b) False
40. 40.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter

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