Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 604 · 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 ammeter is joined in series. (a) False (b) True
2. 2.📏 How many watts (W) is 2.8 kW?
3. 3.📏 How many milliamperes (mA) is 1.44 A?
4. 4.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
5. 5.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
6. 6.📏 Which unit measures power? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
7. 7.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the pipe colour (c) the water pressure (d) a narrow pipe
8. 8.True or false: the ammeter measures current. (a) False (b) True
9. 9.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
10. 10.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
11. 11.📏 How many ohms (Ω) is 0.7 kΩ?
12. 12.📏 Which unit measures energy used each second? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
13. 13.📏 How many kilowatts (kW) is 1500 W? =
14. 14.📏 How many kilowatts (kW) is 3900 W? =
15. 15.📏 How many milliamperes (mA) is 1.83 A?
16. 16.📏 How many kilowatts (kW) is 4600 W? =
17. 17.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
18. 18.📏 Which unit measures the flow of charge? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
19. 19.True or false: how much a part resists is measured in watts (W). (a) True (b) False
20. 20.Which of these is measured in watts (W)? (a) energy used each second (b) how much a part resists (c) the push of a cell (d) current
21. 21.📏 How many ohms (Ω) is 0.1 kΩ?
22. 22.📏 How many milliamperes (mA) is 1.58 A?
23. 23.📏 How many ohms (Ω) is 7.5 kΩ?
24. 24.Which of these is measured in volts (V)? (a) the push of a cell (b) energy used each second (c) the flow of charge (d) current
25. 25.📏 How many amperes (A) is 270 mA? =
26. 26.True or false: resistance is measured in amperes (A). (a) True (b) False
27. 27.📏 How many kilo-ohms (kΩ) is 9000 Ω? =
28. 28.📏 Which unit measures voltage? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
29. 29.📏 Which unit measures current? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
30. 30.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
31. 31.True or false: energy used each second is measured in amperes (A). (a) False (b) True
32. 32.📏 Which unit measures the push of a cell? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
33. 33.True or false: the ammeter measures voltage. (a) True (b) False
34. 34.True or false: power is measured in volts (V). (a) False (b) True
35. 35.Which of these is measured in amperes (A)? (a) current (b) the push of a cell (c) how much a part resists (d) voltage
36. 36.True or false: voltage is measured in volts (V). (a) True (b) False
37. 37.📏 How many kilo-ohms (kΩ) is 1400 Ω? =
38. 38.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 100 (c) 10 (d) 1024
39. 39.📏 How many milliamperes (mA) is 0.38 A?
40. 40.📏 How many watts (W) is 3.8 kW?

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