Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 790 · 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) False (b) True
2. 2.📏 How many milliamperes (mA) is 1.1 A?
3. 3.True or false: the voltmeter measures current. (a) True (b) False
4. 4.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True
5. 5.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
6. 6.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
7. 7.True or false: the voltmeter is joined in series. (a) True (b) False
8. 8.True or false: power is measured in ohms (Ω). (a) True (b) False
9. 9.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
10. 10.True or false: power is measured in amperes (A). (a) False (b) True
11. 11.📏 Which unit measures voltage? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
12. 12.True or false: current is measured in amperes (A). (a) True (b) False
13. 13.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
14. 14.📏 Which unit measures current? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
15. 15.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
16. 16.Which of these is measured in volts (V)? (a) the flow of charge (b) current (c) energy used each second (d) the push of a cell
17. 17.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the tap handle (c) the water pressure (d) the pipe colour
18. 18.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the pipe colour (c) the water pressure (d) the flow of water
19. 19.📏 How many amperes (A) is 860 mA? =
20. 20.📏 Which unit measures power? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
21. 21.📏 Which unit measures resistance? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
22. 22.📏 How many watts (W) is 1.5 kW?
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 of these is measured in ohms (Ω)? (a) the flow of charge (b) current (c) power (d) resistance
25. 25.📏 How many watts (W) is 3.1 kW?
26. 26.True or false: the ammeter measures voltage. (a) True (b) False
27. 27.True or false: the push of a cell is measured in amperes (A). (a) False (b) True
28. 28.📏 How many kilowatts (kW) is 1250 W? =
29. 29.Which of these is measured in watts (W)? (a) the push of a cell (b) power (c) resistance (d) the flow of charge
30. 30.True or false: voltage is measured in volts (V). (a) True (b) False
31. 31.Which of these is measured in amperes (A)? (a) voltage (b) power (c) current (d) the push of a cell
32. 32.📏 How many amperes (A) is 2910 mA? =
33. 33.📏 Which unit measures how much a part resists? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
34. 34.Which of these is measured in volts (V)? (a) how much a part resists (b) power (c) voltage (d) the flow of charge
35. 35.📏 How many amperes (A) is 2130 mA? =
36. 36.True or false: the voltmeter is joined across a part. (a) True (b) False
37. 37.True or false: the ammeter is joined across a part. (a) False (b) True
38. 38.📏 How many milliamperes (mA) is 0.08 A?
39. 39.📏 How many watts (W) is 2.3 kW?
40. 40.📏 How many amperes (A) is 1770 mA? =

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