Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 821 · 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 ohms (Ω)? (a) voltage (b) the flow of charge (c) power (d) how much a part resists
2. 2.Which of these is measured in volts (V)? (a) voltage (b) the flow of charge (c) energy used each second (d) current
3. 3.📏 How many amperes (A) is 50 mA? =
4. 4.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a bigger tank (c) a narrow pipe (d) the flow of water
5. 5.📏 How many kilowatts (kW) is 2850 W? =
6. 6.📏 How many amperes (A) is 2910 mA? =
7. 7.📏 How many ohms (Ω) is 8.4 kΩ?
8. 8.True or false: the flow of charge is measured in volts (V). (a) True (b) False
9. 9.True or false: current is measured in amperes (A). (a) True (b) False
10. 10.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
11. 11.True or false: the push of a cell is measured in volts (V). (a) True (b) False
12. 12.📏 Which unit measures current? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
13. 13.Which of these is measured in amperes (A)? (a) power (b) voltage (c) current (d) the push of a cell
14. 14.Which of these is measured in watts (W)? (a) the flow of charge (b) resistance (c) current (d) power
15. 15.📏 Which unit measures voltage? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
16. 16.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
17. 17.📏 How many watts (W) is 1.5 kW?
18. 18.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 10 (c) 1024 (d) 100
19. 19.📏 How many kilowatts (kW) is 3300 W? =
20. 20.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
21. 21.📏 Which unit measures energy used each second? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
22. 22.True or false: the ammeter measures voltage. (a) False (b) True
23. 23.📏 How many ohms (Ω) is 2.8 kΩ?
24. 24.True or false: the ammeter is joined in series. (a) True (b) False
25. 25.📏 Which unit measures power? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
26. 26.True or false: the voltmeter is joined across a part. (a) False (b) True
27. 27.True or false: the ammeter is joined across a part. (a) True (b) False
28. 28.📏 Which unit measures the push of a cell? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
29. 29.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the flow of water (c) a narrow pipe (d) the pipe colour
30. 30.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the water pressure (d) the pipe colour
31. 31.📏 How many kilo-ohms (kΩ) is 4900 Ω? =
32. 32.True or false: the voltmeter measures voltage. (a) True (b) False
33. 33.Which of these is measured in volts (V)? (a) the push of a cell (b) current (c) resistance (d) power
34. 34.📏 How many milliamperes (mA) is 2.2 A?
35. 35.Which of these is measured in watts (W)? (a) the push of a cell (b) current (c) energy used each second (d) how much a part resists
36. 36.True or false: current is measured in ohms (Ω). (a) False (b) True
37. 37.📏 How many kilowatts (kW) is 2550 W? =
38. 38.📏 How many amperes (A) is 900 mA? =
39. 39.📏 How many kilo-ohms (kΩ) is 5100 Ω? =
40. 40.📏 How many kilowatts (kW) is 500 W? =

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