Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 779 · 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.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the flow of water (c) a narrow pipe (d) the pipe colour
2. 2.📏 How many milliamperes (mA) is 2.76 A?
3. 3.True or false: the voltmeter measures current. (a) False (b) True
4. 4.📏 Which unit measures voltage? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
5. 5.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
6. 6.Which of these is measured in amperes (A)? (a) voltage (b) power (c) resistance (d) the flow of charge
7. 7.True or false: resistance is measured in watts (W). (a) True (b) False
8. 8.Which of these is measured in volts (V)? (a) the push of a cell (b) how much a part resists (c) the flow of charge (d) resistance
9. 9.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
10. 10.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
11. 11.📏 Which unit measures current? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
12. 12.📏 How many kilowatts (kW) is 1250 W? =
13. 13.📏 Which unit measures the push of a cell? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
14. 14.📏 How many kilowatts (kW) is 4050 W? =
15. 15.Which of these is measured in amperes (A)? (a) current (b) the push of a cell (c) power (d) resistance
16. 16.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
17. 17.True or false: the voltmeter measures voltage. (a) True (b) False
18. 18.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
19. 19.True or false: current is measured in amperes (A). (a) True (b) False
20. 20.📏 How many milliamperes (mA) is 2.7 A?
21. 21.📏 Which unit measures resistance? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
22. 22.📏 How many ohms (Ω) is 9.4 kΩ?
23. 23.True or false: the voltmeter is joined across a part. (a) True (b) False
24. 24.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
25. 25.True or false: the push of a cell is measured in volts (V). (a) False (b) True
26. 26.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
27. 27.📏 How many kilo-ohms (kΩ) is 6300 Ω? =
28. 28.📏 How many kilo-ohms (kΩ) is 8500 Ω? =
29. 29.True or false: the ammeter is joined in series. (a) False (b) True
30. 30.Which of these is measured in watts (W)? (a) current (b) power (c) the flow of charge (d) the push of a cell
31. 31.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1000 (c) 100 (d) 1024
32. 32.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a narrow pipe (c) a bigger tank (d) the water pressure
33. 33.📏 How many kilo-ohms (kΩ) is 3400 Ω? =
34. 34.📏 How many kilo-ohms (kΩ) is 6800 Ω? =
35. 35.📏 How many milliamperes (mA) is 1.42 A?
36. 36.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True
37. 37.True or false: the ammeter is joined across a part. (a) True (b) False
38. 38.True or false: voltage is measured in volts (V). (a) True (b) False
39. 39.📏 How many watts (W) is 1.2 kW?
40. 40.📏 Which unit measures power? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)

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