Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 289 · 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.True or false: the voltmeter is joined in series. (a) True (b) False
2. 2.📏 How many kilowatts (kW) is 1500 W? =
3. 3.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 60 (c) 1000 (d) 100
4. 4.📏 How many milliamperes (mA) is 2.75 A?
5. 5.📏 How many watts (W) is 2.3 kW?
6. 6.True or false: the ammeter measures voltage. (a) False (b) True
7. 7.📏 Which unit measures energy used each second? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
8. 8.True or false: the push of a cell is measured in watts (W). (a) True (b) False
9. 9.📏 How many milliamperes (mA) is 1.74 A?
10. 10.📏 How many watts (W) is 0.4 kW?
11. 11.Which of these is measured in volts (V)? (a) voltage (b) current (c) the flow of charge (d) how much a part resists
12. 12.True or false: the voltmeter is joined across a part. (a) False (b) True
13. 13.📏 How many milliamperes (mA) is 0.65 A?
14. 14.True or false: the voltmeter measures voltage. (a) False (b) True
15. 15.📏 How many milliamperes (mA) is 2.42 A?
16. 16.📏 Which unit measures power? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
17. 17.📏 How many kilowatts (kW) is 2600 W? =
18. 18.📏 Which unit measures voltage? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
19. 19.📏 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
20. 20.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the flow of water (c) the pipe colour (d) a narrow pipe
21. 21.📏 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
22. 22.Which of these is measured in volts (V)? (a) current (b) power (c) resistance (d) the push of a cell
23. 23.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1000 (c) 10 (d) 1024
24. 24.📏 How many kilo-ohms (kΩ) is 6700 Ω? =
25. 25.📏 How many kilowatts (kW) is 1450 W? =
26. 26.📏 Which unit measures resistance? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
27. 27.📏 How many ohms (Ω) is 5.7 kΩ?
28. 28.📏 Which unit measures how much a part resists? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
29. 29.📏 How many ohms (Ω) is 5.8 kΩ?
30. 30.📏 Which unit measures the flow of charge? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
31. 31.Which of these is measured in watts (W)? (a) voltage (b) current (c) how much a part resists (d) energy used each second
32. 32.True or false: the voltmeter measures current. (a) False (b) True
33. 33.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
34. 34.True or false: the push of a cell is measured in volts (V). (a) True (b) False
35. 35.📏 How many amperes (A) is 1370 mA? =
36. 36.Which of these is measured in watts (W)? (a) the flow of charge (b) power (c) the push of a cell (d) voltage
37. 37.True or false: energy used each second is measured in amperes (A). (a) True (b) False
38. 38.📏 How many kilowatts (kW) is 4150 W? =
39. 39.True or false: voltage is measured in ohms (Ω). (a) True (b) False
40. 40.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter

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