Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 475 · 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) current (b) the push of a cell (c) resistance (d) power
2. 2.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
3. 3.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
4. 4.📏 How many amperes (A) is 1900 mA? =
5. 5.True or false: the flow of charge is measured in volts (V). (a) False (b) True
6. 6.Which of these is measured in volts (V)? (a) current (b) power (c) how much a part resists (d) voltage
7. 7.📏 How many kilo-ohms (kΩ) is 3400 Ω? =
8. 8.True or false: the voltmeter is joined in series. (a) True (b) False
9. 9.📏 How many amperes (A) is 1490 mA? =
10. 10.True or false: how much a part resists is measured in volts (V). (a) False (b) True
11. 11.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1000 (c) 1024 (d) 100
12. 12.📏 How many milliamperes (mA) is 2.55 A?
13. 13.📏 Which unit measures the push of a cell? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
14. 14.📏 Which unit measures energy used each second? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
15. 15.Which of these is measured in amperes (A)? (a) current (b) voltage (c) energy used each second (d) the push of a cell
16. 16.📏 How many kilowatts (kW) is 600 W? =
17. 17.📏 How many ohms (Ω) is 4.1 kΩ?
18. 18.📏 How many kilo-ohms (kΩ) is 700 Ω? =
19. 19.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
20. 20.True or false: the ammeter measures current. (a) True (b) False
21. 21.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) the flow of charge (c) how much a part resists (d) voltage
22. 22.True or false: the voltmeter measures current. (a) False (b) True
23. 23.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a bigger tank (c) the water pressure (d) a narrow pipe
24. 24.📏 Which unit measures power? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
25. 25.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) a narrow pipe (d) the flow of water
26. 26.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
27. 27.📏 How many milliamperes (mA) is 0.33 A?
28. 28.📏 Which unit measures how much a part resists? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
29. 29.📏 Which unit measures voltage? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
30. 30.📏 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
31. 31.True or false: voltage is measured in volts (V). (a) True (b) False
32. 32.📏 How many watts (W) is 0.5 kW?
33. 33.📏 How many watts (W) is 1.1 kW?
34. 34.True or false: the ammeter is joined in series. (a) False (b) True
35. 35.📏 How many watts (W) is 0.1 kW?
36. 36.📏 How many kilowatts (kW) is 4300 W? =
37. 37.Which of these is measured in ohms (Ω)? (a) current (b) energy used each second (c) resistance (d) voltage
38. 38.True or false: power is measured in watts (W). (a) True (b) False
39. 39.📏 How many amperes (A) is 1730 mA? =
40. 40.📏 How many amperes (A) is 510 mA? =

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