Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 252 · 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 watts (W) is 3.1 kW?
2. 2.True or false: the ammeter measures current. (a) True (b) False
3. 3.📏 How many milliamperes (mA) is 0.55 A?
4. 4.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
5. 5.📏 How many milliamperes (mA) is 0.93 A?
6. 6.📏 How many milliamperes (mA) is 0.97 A?
7. 7.📏 How many milliamperes (mA) is 1.56 A?
8. 8.True or false: the voltmeter is joined in series. (a) True (b) False
9. 9.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
10. 10.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
11. 11.True or false: the ammeter measures voltage. (a) False (b) True
12. 12.True or false: resistance is measured in volts (V). (a) True (b) False
13. 13.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
14. 14.True or false: the voltmeter measures current. (a) False (b) True
15. 15.📏 How many kilo-ohms (kΩ) is 300 Ω? =
16. 16.True or false: the push of a cell is measured in amperes (A). (a) False (b) True
17. 17.📏 How many amperes (A) is 1600 mA? =
18. 18.📏 How many milliamperes (mA) is 2.68 A?
19. 19.📏 How many watts (W) is 2 kW?
20. 20.📏 How many milliamperes (mA) is 2 A?
21. 21.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the pipe colour (c) the water pressure (d) the tap handle
22. 22.📏 How many ohms (Ω) is 3 kΩ?
23. 23.True or false: the ammeter is joined across a part. (a) True (b) False
24. 24.📏 How many watts (W) is 1 kW?
25. 25.Which of these is measured in watts (W)? (a) the push of a cell (b) energy used each second (c) resistance (d) how much a part resists
26. 26.True or false: the push of a cell is measured in volts (V). (a) True (b) False
27. 27.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 100 (c) 1000 (d) 60
28. 28.📏 Which unit measures the push of a cell? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
29. 29.📏 How many ohms (Ω) is 1.7 kΩ?
30. 30.True or false: voltage is measured in volts (V). (a) False (b) True
31. 31.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) a narrow pipe (c) the pipe colour (d) the flow of water
32. 32.Which of these is measured in ohms (Ω)? (a) current (b) voltage (c) how much a part resists (d) energy used each second
33. 33.📏 How many ohms (Ω) is 1.9 kΩ?
34. 34.📏 Which unit measures voltage? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
35. 35.📏 Which unit measures resistance? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
36. 36.📏 How many kilo-ohms (kΩ) is 2700 Ω? =
37. 37.True or false: the voltmeter measures voltage. (a) False (b) True
38. 38.📏 How many kilo-ohms (kΩ) is 6700 Ω? =
39. 39.True or false: resistance is measured in ohms (Ω). (a) True (b) False
40. 40.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) a bigger tank (c) the flow of water (d) the water pressure

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