Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 950 · 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 of these is measured in watts (W)? (a) the flow of charge (b) current (c) energy used each second (d) the push of a cell
2. 2.📏 How many kilo-ohms (kΩ) is 7300 Ω? =
3. 3.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
4. 4.📏 How many ohms (Ω) is 4.2 kΩ?
5. 5.True or false: the ammeter measures voltage. (a) False (b) True
6. 6.Which of these is measured in amperes (A)? (a) how much a part resists (b) the flow of charge (c) power (d) energy used each second
7. 7.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
8. 8.📏 How many kilo-ohms (kΩ) is 4200 Ω? =
9. 9.📏 Which unit measures the flow of charge? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
10. 10.True or false: the push of a cell is measured in volts (V). (a) True (b) False
11. 11.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
12. 12.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 10 (d) 1000
13. 13.📏 Which unit measures the push of a cell? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
14. 14.📏 How many kilowatts (kW) is 1900 W? =
15. 15.📏 Which unit measures power? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
16. 16.True or false: the voltmeter is joined in series. (a) True (b) False
17. 17.Which of these is measured in volts (V)? (a) voltage (b) power (c) resistance (d) current
18. 18.📏 How many ohms (Ω) is 7.8 kΩ?
19. 19.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
20. 20.📏 How many milliamperes (mA) is 0.79 A?
21. 21.Which of these is measured in volts (V)? (a) current (b) power (c) the push of a cell (d) resistance
22. 22.📏 How many amperes (A) is 1520 mA? =
23. 23.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
24. 24.True or false: the ammeter is joined across a part. (a) True (b) False
25. 25.📏 Which unit measures energy used each second? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
26. 26.📏 How many watts (W) is 5 kW?
27. 27.True or false: power is measured in watts (W). (a) True (b) False
28. 28.True or false: resistance is measured in volts (V). (a) False (b) True
29. 29.Which of these is measured in watts (W)? (a) voltage (b) the push of a cell (c) power (d) current
30. 30.📏 How many watts (W) is 0.3 kW?
31. 31.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) the water pressure (c) a narrow pipe (d) a bigger tank
32. 32.📏 How many kilo-ohms (kΩ) is 6000 Ω? =
33. 33.True or false: voltage is measured in volts (V). (a) False (b) True
34. 34.True or false: resistance is measured in ohms (Ω). (a) True (b) False
35. 35.📏 How many kilo-ohms (kΩ) is 9800 Ω? =
36. 36.True or false: power is measured in amperes (A). (a) True (b) False
37. 37.True or false: the voltmeter is joined across a part. (a) False (b) True
38. 38.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 1000 (c) 10 (d) 100
39. 39.📏 How many milliamperes (mA) is 0.09 A?
40. 40.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the pipe colour (c) the tap handle (d) the water pressure

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