Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 932 · 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 flow of charge is measured in volts (V). (a) False (b) True
2. 2.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the water tank lid (c) the tap handle (d) the pipe colour
3. 3.True or false: the voltmeter measures current. (a) True (b) False
4. 4.True or false: the voltmeter is joined in series. (a) True (b) False
5. 5.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
6. 6.📏 How many kilo-ohms (kΩ) is 300 Ω? =
7. 7.📏 How many ohms (Ω) is 7.7 kΩ?
8. 8.True or false: the push of a cell is measured in volts (V). (a) True (b) False
9. 9.True or false: voltage is measured in volts (V). (a) True (b) False
10. 10.True or false: energy used each second is measured in amperes (A). (a) False (b) True
11. 11.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
12. 12.📏 How many ohms (Ω) is 5.5 kΩ?
13. 13.📏 Which unit measures how much a part resists? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
14. 14.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a bigger tank (c) a narrow pipe (d) the water pressure
15. 15.📏 How many kilowatts (kW) is 1350 W? =
16. 16.📏 How many kilowatts (kW) is 250 W? =
17. 17.True or false: power is measured in watts (W). (a) True (b) False
18. 18.Which of these is measured in volts (V)? (a) energy used each second (b) the push of a cell (c) resistance (d) how much a part resists
19. 19.True or false: current is measured in amperes (A). (a) False (b) True
20. 20.True or false: power is measured in volts (V). (a) True (b) False
21. 21.📏 Which unit measures voltage? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
22. 22.True or false: the voltmeter is joined across a part. (a) False (b) True
23. 23.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
24. 24.📏 Which unit measures current? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
25. 25.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) power (c) how much a part resists (d) current
26. 26.Which of these is measured in volts (V)? (a) how much a part resists (b) voltage (c) the flow of charge (d) power
27. 27.📏 Which unit measures energy used each second? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
28. 28.True or false: resistance is measured in watts (W). (a) True (b) False
29. 29.True or false: the ammeter measures voltage. (a) True (b) False
30. 30.Which of these is measured in watts (W)? (a) power (b) resistance (c) the push of a cell (d) current
31. 31.📏 How many ohms (Ω) is 6.2 kΩ?
32. 32.True or false: the voltmeter measures voltage. (a) True (b) False
33. 33.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
34. 34.📏 How many watts (W) is 1.1 kW?
35. 35.📏 Which unit measures the push of a cell? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
36. 36.True or false: the ammeter measures current. (a) False (b) True
37. 37.📏 How many milliamperes (mA) is 0.62 A?
38. 38.📏 How many milliamperes (mA) is 0.77 A?
39. 39.Which of these is measured in watts (W)? (a) resistance (b) the push of a cell (c) energy used each second (d) voltage
40. 40.True or false: the ammeter is joined across a part. (a) True (b) False

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