Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 146 · 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.📏 Which unit measures resistance? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
2. 2.Which of these is measured in volts (V)? (a) current (b) resistance (c) energy used each second (d) voltage
3. 3.Which of these is measured in volts (V)? (a) the push of a cell (b) energy used each second (c) power (d) the flow of charge
4. 4.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
5. 5.True or false: the push of a cell is measured in watts (W). (a) False (b) True
6. 6.📏 How many watts (W) is 1 kW?
7. 7.True or false: voltage is measured in volts (V). (a) True (b) False
8. 8.📏 How many kilo-ohms (kΩ) is 5800 Ω? =
9. 9.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
10. 10.📏 Which unit measures the flow of charge? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
11. 11.True or false: the ammeter measures voltage. (a) True (b) False
12. 12.📏 How many kilowatts (kW) is 3150 W? =
13. 13.True or false: the ammeter is joined across a part. (a) True (b) False
14. 14.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
15. 15.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
16. 16.True or false: power is measured in amperes (A). (a) False (b) True
17. 17.True or false: the ammeter measures current. (a) True (b) False
18. 18.📏 Which unit measures current? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
19. 19.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
20. 20.True or false: resistance is measured in ohms (Ω). (a) False (b) True
21. 21.📏 Which unit measures how much a part resists? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
22. 22.📏 How many kilo-ohms (kΩ) is 10000 Ω? =
23. 23.True or false: current is measured in volts (V). (a) False (b) True
24. 24.📏 How many amperes (A) is 510 mA? =
25. 25.📏 How many amperes (A) is 220 mA? =
26. 26.📏 How many watts (W) is 0.5 kW?
27. 27.📏 How many kilowatts (kW) is 2650 W? =
28. 28.📏 How many ohms (Ω) is 0.7 kΩ?
29. 29.📏 How many milliamperes (mA) is 1.66 A?
30. 30.True or false: the ammeter is joined in series. (a) False (b) True
31. 31.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) a narrow pipe (c) the pipe colour (d) the water pressure
32. 32.📏 How many kilo-ohms (kΩ) is 3300 Ω? =
33. 33.📏 How many milliamperes (mA) is 2.08 A?
34. 34.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1000 (c) 10 (d) 1024
35. 35.📏 Which unit measures power? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
36. 36.📏 How many kilowatts (kW) is 4150 W? =
37. 37.True or false: power is measured in volts (V). (a) True (b) False
38. 38.📏 How many ohms (Ω) is 9.5 kΩ?
39. 39.Which of these is measured in amperes (A)? (a) the flow of charge (b) power (c) the push of a cell (d) how much a part resists
40. 40.True or false: the push of a cell is measured in volts (V). (a) False (b) True

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