Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 437 · 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.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
2. 2.📏 How many amperes (A) is 730 mA? =
3. 3.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) a narrow pipe (d) the flow of water
4. 4.True or false: the ammeter measures voltage. (a) True (b) False
5. 5.True or false: resistance is measured in ohms (Ω). (a) False (b) True
6. 6.True or false: how much a part resists is measured in watts (W). (a) True (b) False
7. 7.📏 How many ohms (Ω) is 3.6 kΩ?
8. 8.📏 Which unit measures how much a part resists? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
9. 9.📏 Which unit measures power? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
10. 10.True or false: the voltmeter is joined in series. (a) False (b) True
11. 11.📏 How many kilo-ohms (kΩ) is 8200 Ω? =
12. 12.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a bigger tank (c) the flow of water (d) a narrow pipe
13. 13.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True
14. 14.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
15. 15.True or false: current is measured in volts (V). (a) False (b) True
16. 16.True or false: the voltmeter measures current. (a) False (b) True
17. 17.Which of these is measured in volts (V)? (a) the flow of charge (b) power (c) voltage (d) current
18. 18.📏 How many amperes (A) is 560 mA? =
19. 19.Which of these is measured in ohms (Ω)? (a) power (b) energy used each second (c) resistance (d) voltage
20. 20.True or false: the voltmeter measures voltage. (a) True (b) False
21. 21.True or false: the voltmeter is joined across a part. (a) False (b) True
22. 22.📏 Which unit measures resistance? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
23. 23.Which of these is measured in volts (V)? (a) the flow of charge (b) resistance (c) energy used each second (d) the push of a cell
24. 24.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
25. 25.Which of these is measured in ohms (Ω)? (a) current (b) power (c) how much a part resists (d) the push of a cell
26. 26.True or false: the flow of charge is measured in watts (W). (a) False (b) True
27. 27.📏 How many ohms (Ω) is 5.6 kΩ?
28. 28.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the tap handle (c) the water pressure (d) the pipe colour
29. 29.📏 How many amperes (A) is 1020 mA? =
30. 30.📏 How many watts (W) is 2.1 kW?
31. 31.📏 How many kilo-ohms (kΩ) is 300 Ω? =
32. 32.📏 How many milliamperes (mA) is 2.87 A?
33. 33.True or false: resistance is measured in watts (W). (a) True (b) False
34. 34.True or false: voltage is measured in ohms (Ω). (a) True (b) False
35. 35.True or false: voltage is measured in amperes (A). (a) False (b) True
36. 36.📏 How many milliamperes (mA) is 2.34 A?
37. 37.📏 How many ohms (Ω) is 1.4 kΩ?
38. 38.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
39. 39.📏 How many watts (W) is 1 kW?
40. 40.📏 How many milliamperes (mA) is 1.04 A?

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