Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 878 · 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 push of a cell is measured in amperes (A). (a) True (b) False
2. 2.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
3. 3.True or false: voltage is measured in amperes (A). (a) False (b) True
4. 4.📏 Which unit measures voltage? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
5. 5.Which of these is measured in volts (V)? (a) resistance (b) voltage (c) current (d) the flow of charge
6. 6.📏 How many amperes (A) is 1730 mA? =
7. 7.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
8. 8.📏 Which unit measures energy used each second? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
9. 9.📏 How many kilo-ohms (kΩ) is 500 Ω? =
10. 10.True or false: the flow of charge is measured in volts (V). (a) False (b) True
11. 11.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True
12. 12.True or false: voltage is measured in volts (V). (a) False (b) True
13. 13.📏 How many amperes (A) is 450 mA? =
14. 14.True or false: how much a part resists is measured in watts (W). (a) False (b) True
15. 15.Which of these is measured in watts (W)? (a) the push of a cell (b) resistance (c) power (d) voltage
16. 16.📏 How many watts (W) is 1.2 kW?
17. 17.📏 Which unit measures current? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
18. 18.📏 How many watts (W) is 5 kW?
19. 19.📏 Which unit measures power? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
20. 20.📏 How many kilowatts (kW) is 4350 W? =
21. 21.Which of these is measured in ohms (Ω)? (a) power (b) voltage (c) the push of a cell (d) how much a part resists
22. 22.📏 How many kilowatts (kW) is 3050 W? =
23. 23.True or false: the voltmeter measures voltage. (a) False (b) True
24. 24.📏 How many kilo-ohms (kΩ) is 8500 Ω? =
25. 25.📏 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
26. 26.📏 How many watts (W) is 1.7 kW?
27. 27.True or false: the voltmeter measures current. (a) True (b) False
28. 28.📏 How many ohms (Ω) is 1.5 kΩ?
29. 29.📏 How many ohms (Ω) is 7.7 kΩ?
30. 30.📏 How many milliamperes (mA) is 1.81 A?
31. 31.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) current (c) resistance (d) voltage
32. 32.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) the flow of water (d) a narrow pipe
33. 33.📏 Which unit measures resistance? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
34. 34.📏 How many ohms (Ω) is 4.9 kΩ?
35. 35.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
36. 36.📏 How many watts (W) is 2.3 kW?
37. 37.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the flow of water (c) a narrow pipe (d) the water pressure
38. 38.📏 How many watts (W) is 3.8 kW?
39. 39.True or false: voltage is measured in watts (W). (a) False (b) True
40. 40.📏 How many amperes (A) is 2850 mA? =

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