Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 214 · 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 flow of charge? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
2. 2.Which of these is measured in ohms (Ω)? (a) resistance (b) current (c) the push of a cell (d) voltage
3. 3.📏 Which unit measures current? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
4. 4.True or false: resistance is measured in volts (V). (a) True (b) False
5. 5.Which of these is measured in watts (W)? (a) current (b) energy used each second (c) voltage (d) how much a part resists
6. 6.True or false: voltage is measured in watts (W). (a) True (b) False
7. 7.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
8. 8.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
9. 9.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
10. 10.📏 How many kilo-ohms (kΩ) is 4000 Ω? =
11. 11.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
12. 12.📏 Which unit measures voltage? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
13. 13.True or false: the ammeter is joined in series. (a) True (b) False
14. 14.True or false: the ammeter measures voltage. (a) False (b) True
15. 15.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the tap handle (c) the pipe colour (d) the water pressure
16. 16.True or false: the voltmeter measures current. (a) False (b) True
17. 17.📏 How many kilowatts (kW) is 2950 W? =
18. 18.Which of these is measured in watts (W)? (a) resistance (b) the push of a cell (c) how much a part resists (d) power
19. 19.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the water pressure (c) the pipe colour (d) the flow of water
20. 20.📏 Which unit measures power? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
21. 21.True or false: voltage is measured in ohms (Ω). (a) True (b) False
22. 22.📏 How many watts (W) is 2 kW?
23. 23.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) how much a part resists (c) power (d) voltage
24. 24.📏 How many kilowatts (kW) is 4150 W? =
25. 25.📏 How many milliamperes (mA) is 1.59 A?
26. 26.📏 How many amperes (A) is 1400 mA? =
27. 27.📏 How many milliamperes (mA) is 1.72 A?
28. 28.Which of these is measured in volts (V)? (a) voltage (b) energy used each second (c) the flow of charge (d) how much a part resists
29. 29.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
30. 30.True or false: the voltmeter is joined in series. (a) True (b) False
31. 31.📏 How many kilowatts (kW) is 2600 W? =
32. 32.📏 Which unit measures how much a part resists? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
33. 33.📏 How many kilowatts (kW) is 2850 W? =
34. 34.📏 How many amperes (A) is 880 mA? =
35. 35.📏 How many milliamperes (mA) is 2.99 A?
36. 36.📏 How many milliamperes (mA) is 2.38 A?
37. 37.True or false: the ammeter measures current. (a) False (b) True
38. 38.True or false: power is measured in watts (W). (a) True (b) False
39. 39.Which of these is measured in volts (V)? (a) the flow of charge (b) current (c) energy used each second (d) the push of a cell
40. 40.True or false: resistance is measured in ohms (Ω). (a) False (b) True

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