Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 817 · 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.Which of these is measured in amperes (A)? (a) power (b) current (c) resistance (d) energy used each second
2. 2.📏 How many watts (W) is 0.6 kW?
3. 3.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 1000 (d) 60
4. 4.True or false: voltage is measured in volts (V). (a) True (b) False
5. 5.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
6. 6.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) resistance (c) current (d) voltage
7. 7.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
8. 8.📏 How many milliamperes (mA) is 2.85 A?
9. 9.Which of these is measured in volts (V)? (a) power (b) current (c) voltage (d) the flow of charge
10. 10.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water tank lid (c) the tap handle (d) the water pressure
11. 11.📏 How many amperes (A) is 1800 mA? =
12. 12.True or false: resistance is measured in ohms (Ω). (a) False (b) True
13. 13.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a narrow pipe (c) the water pressure (d) a bigger tank
14. 14.📏 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
15. 15.📏 How many ohms (Ω) is 9.6 kΩ?
16. 16.Which of these is measured in amperes (A)? (a) resistance (b) energy used each second (c) voltage (d) the flow of charge
17. 17.📏 How many milliamperes (mA) is 0.48 A?
18. 18.📏 How many kilowatts (kW) is 600 W? =
19. 19.📏 How many ohms (Ω) is 9.3 kΩ?
20. 20.Which of these is measured in volts (V)? (a) the push of a cell (b) the flow of charge (c) resistance (d) how much a part resists
21. 21.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
22. 22.True or false: the voltmeter is joined across a part. (a) True (b) False
23. 23.📏 How many amperes (A) is 520 mA? =
24. 24.📏 How many watts (W) is 3.7 kW?
25. 25.True or false: the ammeter is joined in series. (a) True (b) False
26. 26.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
27. 27.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) the flow of charge (c) current (d) how much a part resists
28. 28.True or false: the ammeter is joined across a part. (a) True (b) False
29. 29.📏 Which unit measures power? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
30. 30.📏 Which unit measures energy used each second? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
31. 31.True or false: resistance is measured in amperes (A). (a) True (b) False
32. 32.📏 How many watts (W) is 2.6 kW?
33. 33.📏 How many kilowatts (kW) is 150 W? =
34. 34.📏 How many kilowatts (kW) is 1400 W? =
35. 35.True or false: the voltmeter measures current. (a) False (b) True
36. 36.📏 Which unit measures the flow of charge? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
37. 37.True or false: current is measured in amperes (A). (a) False (b) True
38. 38.📏 Which unit measures current? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
39. 39.📏 How many kilo-ohms (kΩ) is 3300 Ω? =
40. 40.True or false: the ammeter measures voltage. (a) True (b) False

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