Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 229 · 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.📏 How many amperes (A) is 530 mA? =
2. 2.📏 Which unit measures power? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
3. 3.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1024 (c) 1000 (d) 100
4. 4.True or false: resistance is measured in amperes (A). (a) False (b) True
5. 5.📏 How many kilowatts (kW) is 3850 W? =
6. 6.True or false: the ammeter measures voltage. (a) True (b) False
7. 7.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
8. 8.Which of these is measured in volts (V)? (a) power (b) current (c) voltage (d) how much a part resists
9. 9.📏 How many ohms (Ω) is 5.2 kΩ?
10. 10.📏 Which unit measures voltage? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
11. 11.📏 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
12. 12.📏 Which unit measures resistance? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
13. 13.Which of these is measured in watts (W)? (a) resistance (b) energy used each second (c) the push of a cell (d) how much a part resists
14. 14.📏 Which unit measures current? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
15. 15.True or false: the ammeter measures current. (a) True (b) False
16. 16.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the water pressure (c) the tap handle (d) the pipe colour
17. 17.Which of these is measured in amperes (A)? (a) the flow of charge (b) voltage (c) resistance (d) how much a part resists
18. 18.Which of these is measured in volts (V)? (a) the push of a cell (b) power (c) energy used each second (d) resistance
19. 19.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
20. 20.True or false: the flow of charge is measured in volts (V). (a) False (b) True
21. 21.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
22. 22.📏 How many kilo-ohms (kΩ) is 7600 Ω? =
23. 23.📏 How many kilowatts (kW) is 2400 W? =
24. 24.True or false: how much a part resists is measured in volts (V). (a) True (b) False
25. 25.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) a narrow pipe (c) the water pressure (d) the flow of water
26. 26.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) current (c) resistance (d) the flow of charge
27. 27.📏 How many kilowatts (kW) is 750 W? =
28. 28.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
29. 29.True or false: energy used each second is measured in watts (W). (a) True (b) False
30. 30.📏 Which unit measures the flow of charge? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
31. 31.📏 Which unit measures the push of a cell? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
32. 32.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
33. 33.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
34. 34.📏 How many milliamperes (mA) is 2.13 A?
35. 35.True or false: the voltmeter measures current. (a) False (b) True
36. 36.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
37. 37.📏 How many kilo-ohms (kΩ) is 1100 Ω? =
38. 38.📏 How many amperes (A) is 1780 mA? =
39. 39.True or false: the voltmeter measures voltage. (a) False (b) True
40. 40.📏 How many watts (W) is 0.3 kW?

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