Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 277 · 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.📏 How many ohms (Ω) is 7.4 kΩ?
2. 2.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
3. 3.Which of these is measured in watts (W)? (a) the push of a cell (b) resistance (c) energy used each second (d) how much a part resists
4. 4.Which of these is measured in volts (V)? (a) energy used each second (b) resistance (c) voltage (d) the flow of charge
5. 5.Which of these is measured in amperes (A)? (a) the flow of charge (b) resistance (c) how much a part resists (d) the push of a cell
6. 6.True or false: power is measured in amperes (A). (a) False (b) True
7. 7.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
8. 8.📏 Which unit measures voltage? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
9. 9.True or false: the ammeter is joined in series. (a) True (b) False
10. 10.📏 Which unit measures current? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
11. 11.True or false: the push of a cell is measured in volts (V). (a) True (b) False
12. 12.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water pressure (c) the tap handle (d) the water tank lid
13. 13.📏 How many ohms (Ω) is 5.1 kΩ?
14. 14.True or false: the voltmeter measures voltage. (a) False (b) True
15. 15.📏 How many amperes (A) is 870 mA? =
16. 16.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 1000 (c) 60 (d) 100
17. 17.📏 Which unit measures resistance? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
18. 18.True or false: the voltmeter is joined across a part. (a) True (b) False
19. 19.Which of these is measured in volts (V)? (a) the push of a cell (b) how much a part resists (c) the flow of charge (d) energy used each second
20. 20.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) a bigger tank (c) the water pressure (d) the flow of water
21. 21.📏 How many ohms (Ω) is 0.4 kΩ?
22. 22.📏 How many milliamperes (mA) is 1.92 A?
23. 23.📏 How many watts (W) is 1.6 kW?
24. 24.📏 Which unit measures the push of a cell? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
25. 25.True or false: current is measured in amperes (A). (a) False (b) True
26. 26.True or false: the ammeter measures voltage. (a) False (b) True
27. 27.📏 How many amperes (A) is 2300 mA? =
28. 28.Which of these is measured in amperes (A)? (a) energy used each second (b) voltage (c) how much a part resists (d) current
29. 29.📏 How many ohms (Ω) is 8.1 kΩ?
30. 30.Which of these is measured in ohms (Ω)? (a) current (b) power (c) energy used each second (d) resistance
31. 31.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the flow of water (c) the pipe colour (d) the water pressure
32. 32.📏 Which unit measures power? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
33. 33.True or false: voltage is measured in ohms (Ω). (a) True (b) False
34. 34.📏 How many kilowatts (kW) is 4250 W? =
35. 35.True or false: power is measured in ohms (Ω). (a) True (b) False
36. 36.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
37. 37.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
38. 38.📏 Which unit measures energy used each second? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
39. 39.📏 How many kilowatts (kW) is 1550 W? =
40. 40.📏 How many amperes (A) is 1990 mA? =

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