Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 122 · 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: the ammeter measures voltage. (a) False (b) True
2. 2.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
3. 3.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
4. 4.True or false: voltage is measured in watts (W). (a) False (b) True
5. 5.True or false: the voltmeter is joined in series. (a) False (b) True
6. 6.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
7. 7.📏 How many amperes (A) is 1790 mA? =
8. 8.📏 Which unit measures energy used each second? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
9. 9.📏 How many kilowatts (kW) is 850 W? =
10. 10.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the water pressure (c) the pipe colour (d) the flow of water
11. 11.📏 How many amperes (A) is 2040 mA? =
12. 12.📏 How many kilowatts (kW) is 4300 W? =
13. 13.📏 How many kilowatts (kW) is 500 W? =
14. 14.📏 How many kilowatts (kW) is 4250 W? =
15. 15.True or false: current is measured in amperes (A). (a) False (b) True
16. 16.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) a bigger tank (c) the flow of water (d) the water pressure
17. 17.📏 How many kilowatts (kW) is 950 W? =
18. 18.📏 How many ohms (Ω) is 2.1 kΩ?
19. 19.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
20. 20.📏 How many kilowatts (kW) is 4350 W? =
21. 21.📏 Which unit measures the push of a cell? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
22. 22.📏 How many amperes (A) is 1770 mA? =
23. 23.True or false: the voltmeter measures voltage. (a) False (b) True
24. 24.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the water pressure (c) the pipe colour (d) the tap handle
25. 25.📏 How many kilo-ohms (kΩ) is 1800 Ω? =
26. 26.📏 Which unit measures voltage? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
27. 27.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 100 (c) 60 (d) 1000
28. 28.Which of these is measured in volts (V)? (a) the push of a cell (b) power (c) how much a part resists (d) current
29. 29.📏 How many milliamperes (mA) is 2.96 A?
30. 30.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
31. 31.True or false: power is measured in watts (W). (a) False (b) True
32. 32.📏 Which unit measures current? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
33. 33.True or false: the flow of charge is measured in watts (W). (a) True (b) False
34. 34.Which of these is measured in ohms (Ω)? (a) energy used each second (b) power (c) the push of a cell (d) resistance
35. 35.📏 How many watts (W) is 4.8 kW?
36. 36.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
37. 37.📏 Which unit measures power? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
38. 38.📏 How many amperes (A) is 2670 mA? =
39. 39.Which of these is measured in watts (W)? (a) current (b) power (c) the flow of charge (d) voltage
40. 40.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter

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