Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 271 · 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 measures current. (a) False (b) True
2. 2.Which of these is measured in watts (W)? (a) the push of a cell (b) how much a part resists (c) resistance (d) energy used each second
3. 3.Which of these is measured in ohms (Ω)? (a) voltage (b) current (c) resistance (d) energy used each second
4. 4.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) a narrow pipe (d) the flow of water
5. 5.📏 Which unit measures voltage? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
6. 6.True or false: the flow of charge is measured in watts (W). (a) True (b) False
7. 7.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
8. 8.True or false: the ammeter measures voltage. (a) False (b) True
9. 9.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
10. 10.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
11. 11.True or false: the voltmeter is joined in series. (a) True (b) False
12. 12.True or false: resistance is measured in ohms (Ω). (a) True (b) False
13. 13.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) the push of a cell (c) current (d) voltage
14. 14.📏 How many ohms (Ω) is 1.4 kΩ?
15. 15.True or false: the voltmeter is joined across a part. (a) True (b) False
16. 16.📏 How many amperes (A) is 70 mA? =
17. 17.📏 Which unit measures power? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
18. 18.Which of these is measured in watts (W)? (a) power (b) resistance (c) voltage (d) the push of a cell
19. 19.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 60 (c) 1000 (d) 10
20. 20.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
21. 21.True or false: the voltmeter measures voltage. (a) True (b) False
22. 22.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the flow of water (c) a bigger tank (d) the water pressure
23. 23.📏 How many ohms (Ω) is 0.9 kΩ?
24. 24.📏 Which unit measures energy used each second? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
25. 25.📏 How many kilo-ohms (kΩ) is 4400 Ω? =
26. 26.📏 How many kilowatts (kW) is 4800 W? =
27. 27.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
28. 28.True or false: power is measured in amperes (A). (a) False (b) True
29. 29.Which of these is measured in amperes (A)? (a) how much a part resists (b) current (c) power (d) resistance
30. 30.Which of these is measured in volts (V)? (a) the flow of charge (b) voltage (c) current (d) resistance
31. 31.📏 How many milliamperes (mA) is 0.75 A?
32. 32.📏 Which unit measures the push of a cell? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
33. 33.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 10 (d) 1000
34. 34.📏 How many watts (W) is 4.1 kW?
35. 35.True or false: the push of a cell is measured in volts (V). (a) False (b) True
36. 36.Which of these is measured in amperes (A)? (a) the flow of charge (b) resistance (c) the push of a cell (d) energy used each second
37. 37.📏 How many ohms (Ω) is 7.2 kΩ?
38. 38.True or false: the push of a cell is measured in watts (W). (a) False (b) True
39. 39.True or false: the ammeter is joined across a part. (a) False (b) True
40. 40.True or false: voltage is measured in volts (V). (a) False (b) True

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