Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 383 · 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 unit measures the push of a cell? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
2. 2.📏 Which unit measures energy used each second? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
3. 3.📏 How many watts (W) is 4.5 kW?
4. 4.True or false: the ammeter is joined across a part. (a) True (b) False
5. 5.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
6. 6.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
7. 7.📏 Which unit measures resistance? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
8. 8.Which of these is measured in watts (W)? (a) current (b) resistance (c) how much a part resists (d) power
9. 9.Which of these is measured in volts (V)? (a) current (b) power (c) how much a part resists (d) voltage
10. 10.📏 How many kilo-ohms (kΩ) is 7800 Ω? =
11. 11.True or false: the ammeter measures current. (a) True (b) False
12. 12.Which of these is measured in watts (W)? (a) how much a part resists (b) resistance (c) energy used each second (d) the flow of charge
13. 13.📏 Which unit measures how much a part resists? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
14. 14.Which of these is measured in ohms (Ω)? (a) current (b) voltage (c) resistance (d) the push of a cell
15. 15.True or false: the voltmeter measures voltage. (a) False (b) True
16. 16.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water tank lid (c) the water pressure (d) the tap handle
17. 17.True or false: voltage is measured in ohms (Ω). (a) True (b) False
18. 18.📏 How many watts (W) is 1.6 kW?
19. 19.📏 How many kilowatts (kW) is 2650 W? =
20. 20.True or false: the voltmeter measures current. (a) True (b) False
21. 21.📏 How many amperes (A) is 90 mA? =
22. 22.True or false: voltage is measured in volts (V). (a) True (b) False
23. 23.True or false: energy used each second is measured in amperes (A). (a) True (b) False
24. 24.📏 How many kilowatts (kW) is 150 W? =
25. 25.📏 How many amperes (A) is 80 mA? =
26. 26.📏 Which unit measures voltage? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
27. 27.True or false: resistance is measured in amperes (A). (a) False (b) True
28. 28.📏 Which unit measures the flow of charge? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
29. 29.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
30. 30.📏 How many kilowatts (kW) is 1350 W? =
31. 31.True or false: the push of a cell is measured in volts (V). (a) True (b) False
32. 32.📏 How many milliamperes (mA) is 0.36 A?
33. 33.True or false: voltage is measured in amperes (A). (a) False (b) True
34. 34.Which of these is measured in amperes (A)? (a) current (b) how much a part resists (c) voltage (d) resistance
35. 35.📏 How many watts (W) is 1 kW?
36. 36.📏 Which unit measures current? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
37. 37.📏 How many kilowatts (kW) is 4600 W? =
38. 38.Which of these is measured in volts (V)? (a) the flow of charge (b) energy used each second (c) the push of a cell (d) how much a part resists
39. 39.True or false: the ammeter is joined in series. (a) False (b) True
40. 40.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the pipe colour (c) the flow of water (d) the water pressure

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