Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 626 · 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: current is measured in volts (V). (a) True (b) False
2. 2.True or false: the ammeter measures voltage. (a) True (b) False
3. 3.📏 How many milliamperes (mA) is 2.84 A?
4. 4.Which of these is measured in volts (V)? (a) the push of a cell (b) the flow of charge (c) power (d) current
5. 5.📏 How many amperes (A) is 1850 mA? =
6. 6.Which of these is measured in amperes (A)? (a) energy used each second (b) voltage (c) the flow of charge (d) the push of a cell
7. 7.📏 How many kilo-ohms (kΩ) is 8300 Ω? =
8. 8.Which of these is measured in volts (V)? (a) energy used each second (b) current (c) how much a part resists (d) voltage
9. 9.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
10. 10.📏 Which unit measures voltage? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
11. 11.Which of these is measured in watts (W)? (a) voltage (b) resistance (c) the flow of charge (d) energy used each second
12. 12.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 60 (c) 1000 (d) 100
13. 13.True or false: power is measured in volts (V). (a) False (b) True
14. 14.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) a narrow pipe (c) the pipe colour (d) the water pressure
15. 15.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
16. 16.True or false: resistance is measured in ohms (Ω). (a) False (b) True
17. 17.📏 How many amperes (A) is 830 mA? =
18. 18.📏 How many milliamperes (mA) is 2.24 A?
19. 19.📏 How many ohms (Ω) is 7.9 kΩ?
20. 20.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
21. 21.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
22. 22.📏 How many amperes (A) is 2730 mA? =
23. 23.True or false: the voltmeter is joined across a part. (a) False (b) True
24. 24.📏 How many watts (W) is 3.4 kW?
25. 25.📏 Which unit measures how much a part resists? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
26. 26.📏 How many ohms (Ω) is 4.5 kΩ?
27. 27.True or false: the voltmeter is joined in series. (a) True (b) False
28. 28.📏 Which unit measures the flow of charge? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
29. 29.Which of these is measured in ohms (Ω)? (a) current (b) how much a part resists (c) voltage (d) energy used each second
30. 30.📏 How many ohms (Ω) is 4 kΩ?
31. 31.Which of these is measured in ohms (Ω)? (a) current (b) the flow of charge (c) resistance (d) power
32. 32.True or false: energy used each second is measured in watts (W). (a) False (b) True
33. 33.True or false: the ammeter is joined across a part. (a) True (b) False
34. 34.📏 How many amperes (A) is 1300 mA? =
35. 35.Which of these is measured in watts (W)? (a) voltage (b) the push of a cell (c) power (d) resistance
36. 36.📏 How many amperes (A) is 680 mA? =
37. 37.True or false: current is measured in ohms (Ω). (a) True (b) False
38. 38.True or false: the ammeter measures current. (a) False (b) True
39. 39.True or false: the voltmeter measures current. (a) True (b) False
40. 40.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the tap handle (c) the water pressure (d) the water tank lid

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