Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 85 · 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 kilo-ohms (kΩ) is 5300 Ω? =
3. 3.True or false: the ammeter measures current. (a) False (b) True
4. 4.📏 How many amperes (A) is 1430 mA? =
5. 5.📏 Which unit measures power? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
6. 6.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a narrow pipe (c) a bigger tank (d) the flow of water
7. 7.📏 Which unit measures voltage? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
8. 8.📏 Which unit measures current? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
9. 9.True or false: the ammeter is joined in series. (a) True (b) False
10. 10.True or false: power is measured in volts (V). (a) True (b) False
11. 11.Which of these is measured in ohms (Ω)? (a) resistance (b) energy used each second (c) the push of a cell (d) the flow of charge
12. 12.True or false: the voltmeter measures voltage. (a) True (b) False
13. 13.True or false: power is measured in amperes (A). (a) True (b) False
14. 14.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
15. 15.📏 How many milliamperes (mA) is 2.65 A?
16. 16.📏 How many ohms (Ω) is 8.1 kΩ?
17. 17.📏 Which unit measures the flow of charge? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
18. 18.📏 How many ohms (Ω) is 6.5 kΩ?
19. 19.📏 How many amperes (A) is 1120 mA? =
20. 20.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
21. 21.True or false: the ammeter measures voltage. (a) True (b) False
22. 22.📏 How many watts (W) is 0.2 kW?
23. 23.📏 How many watts (W) is 2.5 kW?
24. 24.True or false: the voltmeter is joined in series. (a) True (b) False
25. 25.📏 How many kilowatts (kW) is 3600 W? =
26. 26.Which of these is measured in watts (W)? (a) the push of a cell (b) power (c) resistance (d) how much a part resists
27. 27.Which of these is measured in amperes (A)? (a) voltage (b) energy used each second (c) the flow of charge (d) how much a part resists
28. 28.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 60 (c) 100 (d) 10
29. 29.Which of these is measured in watts (W)? (a) the push of a cell (b) resistance (c) current (d) energy used each second
30. 30.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
31. 31.📏 How many amperes (A) is 2420 mA? =
32. 32.📏 Which unit measures the push of a cell? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
33. 33.📏 How many amperes (A) is 2140 mA? =
34. 34.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the pipe colour (c) the water pressure (d) the tap handle
35. 35.True or false: power is measured in ohms (Ω). (a) True (b) False
36. 36.📏 How many amperes (A) is 2670 mA? =
37. 37.📏 How many kilo-ohms (kΩ) is 5700 Ω? =
38. 38.📏 How many amperes (A) is 1790 mA? =
39. 39.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
40. 40.Which of these is measured in volts (V)? (a) resistance (b) current (c) how much a part resists (d) voltage

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