Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 721 · 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: current is measured in ohms (Ω). (a) False (b) True
2. 2.📏 Which unit measures power? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
3. 3.📏 Which unit measures the push of a cell? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
4. 4.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
5. 5.True or false: the voltmeter is joined across a part. (a) False (b) True
6. 6.Which of these is measured in volts (V)? (a) the flow of charge (b) energy used each second (c) power (d) the push of a cell
7. 7.True or false: the ammeter is joined across a part. (a) True (b) False
8. 8.True or false: current is measured in amperes (A). (a) False (b) True
9. 9.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 100 (c) 10 (d) 1024
10. 10.Which of these is measured in volts (V)? (a) power (b) the flow of charge (c) voltage (d) current
11. 11.📏 Which unit measures current? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
12. 12.True or false: the ammeter measures voltage. (a) True (b) False
13. 13.📏 How many ohms (Ω) is 2.1 kΩ?
14. 14.Which of these is measured in watts (W)? (a) current (b) the push of a cell (c) energy used each second (d) the flow of charge
15. 15.Which of these is measured in amperes (A)? (a) energy used each second (b) voltage (c) the flow of charge (d) resistance
16. 16.Which of these is measured in ohms (Ω)? (a) voltage (b) power (c) the flow of charge (d) resistance
17. 17.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
18. 18.📏 How many watts (W) is 0.4 kW?
19. 19.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
20. 20.Which of these is measured in ohms (Ω)? (a) current (b) how much a part resists (c) power (d) the push of a cell
21. 21.📏 Which unit measures resistance? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
22. 22.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the pipe colour (c) the water tank lid (d) the water pressure
23. 23.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
24. 24.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
25. 25.Which of these is measured in amperes (A)? (a) energy used each second (b) resistance (c) current (d) the push of a cell
26. 26.True or false: the voltmeter is joined in series. (a) False (b) True
27. 27.True or false: the ammeter is joined in series. (a) True (b) False
28. 28.📏 How many kilowatts (kW) is 4900 W? =
29. 29.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 1000 (c) 60 (d) 10
30. 30.True or false: resistance is measured in amperes (A). (a) False (b) True
31. 31.📏 How many kilowatts (kW) is 4150 W? =
32. 32.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True
33. 33.True or false: energy used each second is measured in watts (W). (a) False (b) True
34. 34.True or false: the push of a cell is measured in volts (V). (a) True (b) False
35. 35.True or false: resistance is measured in watts (W). (a) False (b) True
36. 36.True or false: how much a part resists is measured in watts (W). (a) False (b) True
37. 37.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
38. 38.True or false: the voltmeter measures voltage. (a) True (b) False
39. 39.True or false: the voltmeter measures current. (a) True (b) False
40. 40.📏 How many kilo-ohms (kΩ) is 7700 Ω? =

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