Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 6 · 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: power is measured in volts (V). (a) True (b) False
2. 2.📏 Which unit measures power? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
3. 3.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
4. 4.True or false: the voltmeter is joined in series. (a) False (b) True
5. 5.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the pipe colour (c) a narrow pipe (d) the flow of water
6. 6.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
7. 7.📏 How many amperes (A) is 2740 mA? =
8. 8.📏 How many watts (W) is 4.1 kW?
9. 9.Which of these is measured in amperes (A)? (a) the flow of charge (b) voltage (c) power (d) energy used each second
10. 10.True or false: the voltmeter is joined across a part. (a) False (b) True
11. 11.Which of these is measured in watts (W)? (a) the push of a cell (b) energy used each second (c) current (d) voltage
12. 12.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 1000 (c) 60 (d) 100
13. 13.Which of these is measured in volts (V)? (a) energy used each second (b) the push of a cell (c) resistance (d) current
14. 14.True or false: the voltmeter measures current. (a) False (b) True
15. 15.Which of these is measured in ohms (Ω)? (a) voltage (b) the flow of charge (c) resistance (d) power
16. 16.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
17. 17.📏 How many amperes (A) is 1970 mA? =
18. 18.True or false: the ammeter measures voltage. (a) False (b) True
19. 19.📏 How many watts (W) is 1.5 kW?
20. 20.📏 How many ohms (Ω) is 2.2 kΩ?
21. 21.True or false: the ammeter is joined in series. (a) False (b) True
22. 22.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the pipe colour (c) the water tank lid (d) the water pressure
23. 23.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
24. 24.📏 Which unit measures how much a part resists? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
25. 25.📏 How many milliamperes (mA) is 2.09 A?
26. 26.📏 How many amperes (A) is 2230 mA? =
27. 27.True or false: the ammeter measures current. (a) False (b) True
28. 28.True or false: current is measured in volts (V). (a) False (b) True
29. 29.📏 How many milliamperes (mA) is 1.4 A?
30. 30.Which of these is measured in volts (V)? (a) energy used each second (b) the flow of charge (c) power (d) voltage
31. 31.📏 How many ohms (Ω) is 3.8 kΩ?
32. 32.📏 Which unit measures resistance? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
33. 33.📏 How many amperes (A) is 210 mA? =
34. 34.📏 Which unit measures the flow of charge? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
35. 35.Which of these is measured in ohms (Ω)? (a) energy used each second (b) the flow of charge (c) voltage (d) how much a part resists
36. 36.📏 How many kilowatts (kW) is 4650 W? =
37. 37.True or false: the voltmeter measures voltage. (a) False (b) True
38. 38.True or false: the push of a cell is measured in volts (V). (a) True (b) False
39. 39.📏 How many ohms (Ω) is 6.5 kΩ?
40. 40.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter

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