Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 400 · 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.📏 How many ohms (Ω) is 7.2 kΩ?
2. 2.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
3. 3.True or false: the voltmeter is joined in series. (a) True (b) False
4. 4.Which of these is measured in volts (V)? (a) voltage (b) the flow of charge (c) how much a part resists (d) current
5. 5.📏 How many ohms (Ω) is 5.9 kΩ?
6. 6.📏 How many amperes (A) is 1180 mA? =
7. 7.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the tap handle (c) the water tank lid (d) the pipe colour
8. 8.📏 Which unit measures voltage? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
9. 9.Which of these is measured in watts (W)? (a) how much a part resists (b) voltage (c) resistance (d) energy used each second
10. 10.Which of these is measured in amperes (A)? (a) voltage (b) power (c) current (d) the push of a cell
11. 11.📏 Which unit measures power? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
12. 12.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
13. 13.True or false: the ammeter measures voltage. (a) False (b) True
14. 14.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
15. 15.📏 Which unit measures current? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
16. 16.True or false: voltage is measured in volts (V). (a) False (b) True
17. 17.Which of these is measured in volts (V)? (a) current (b) power (c) how much a part resists (d) the push of a cell
18. 18.📏 How many watts (W) is 3.6 kW?
19. 19.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 10 (d) 1000
20. 20.📏 How many kilowatts (kW) is 4500 W? =
21. 21.True or false: the ammeter is joined in series. (a) True (b) False
22. 22.True or false: power is measured in volts (V). (a) False (b) True
23. 23.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
24. 24.True or false: energy used each second is measured in ohms (Ω). (a) False (b) True
25. 25.📏 How many kilowatts (kW) is 450 W? =
26. 26.Which of these is measured in watts (W)? (a) resistance (b) the flow of charge (c) voltage (d) power
27. 27.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) current (c) energy used each second (d) how much a part resists
28. 28.📏 How many amperes (A) is 2490 mA? =
29. 29.📏 How many ohms (Ω) is 6.1 kΩ?
30. 30.📏 How many milliamperes (mA) is 0.72 A?
31. 31.True or false: energy used each second is measured in watts (W). (a) True (b) False
32. 32.📏 Which unit measures energy used each second? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
33. 33.📏 How many amperes (A) is 2950 mA? =
34. 34.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
35. 35.📏 How many amperes (A) is 630 mA? =
36. 36.Which of these is measured in amperes (A)? (a) resistance (b) the push of a cell (c) power (d) the flow of charge
37. 37.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 1000 (d) 100
38. 38.📏 Which unit measures the flow of charge? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
39. 39.📏 How many kilo-ohms (kΩ) is 9400 Ω? =
40. 40.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter

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