Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 891 · 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 make 1 kilo-ohm (kΩ)? (a) 1000 (b) 100 (c) 1024 (d) 10
2. 2.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
3. 3.📏 Which unit measures the push of a cell? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
4. 4.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True
5. 5.📏 How many amperes (A) is 1200 mA? =
6. 6.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the pipe colour (c) the flow of water (d) the water pressure
7. 7.True or false: energy used each second is measured in volts (V). (a) True (b) False
8. 8.True or false: the voltmeter measures voltage. (a) True (b) False
9. 9.📏 How many kilowatts (kW) is 1450 W? =
10. 10.True or false: resistance is measured in watts (W). (a) False (b) True
11. 11.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) how much a part resists (c) current (d) the push of a cell
12. 12.📏 Which unit measures power? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
13. 13.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 100 (c) 1000 (d) 60
14. 14.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
15. 15.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
16. 16.📏 How many kilowatts (kW) is 4350 W? =
17. 17.Which of these is measured in volts (V)? (a) the push of a cell (b) how much a part resists (c) current (d) the flow of charge
18. 18.Which of these is measured in volts (V)? (a) the flow of charge (b) power (c) resistance (d) voltage
19. 19.Which of these is measured in ohms (Ω)? (a) power (b) resistance (c) voltage (d) the flow of charge
20. 20.📏 How many kilowatts (kW) is 4850 W? =
21. 21.📏 How many ohms (Ω) is 2.4 kΩ?
22. 22.📏 How many ohms (Ω) is 0.4 kΩ?
23. 23.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the pipe colour (c) the water tank lid (d) the water pressure
24. 24.📏 How many ohms (Ω) is 2.5 kΩ?
25. 25.📏 How many amperes (A) is 2730 mA? =
26. 26.📏 How many ohms (Ω) is 9.7 kΩ?
27. 27.📏 How many kilo-ohms (kΩ) is 7300 Ω? =
28. 28.📏 How many ohms (Ω) is 0.6 kΩ?
29. 29.📏 How many amperes (A) is 210 mA? =
30. 30.📏 How many watts (W) is 2.1 kW?
31. 31.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
32. 32.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
33. 33.True or false: the voltmeter is joined in series. (a) False (b) True
34. 34.Which of these is measured in watts (W)? (a) how much a part resists (b) energy used each second (c) voltage (d) the push of a cell
35. 35.True or false: how much a part resists is measured in amperes (A). (a) True (b) False
36. 36.True or false: the push of a cell is measured in volts (V). (a) False (b) True
37. 37.📏 How many milliamperes (mA) is 1.25 A?
38. 38.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
39. 39.True or false: the voltmeter is joined across a part. (a) False (b) True
40. 40.True or false: the flow of charge is measured in amperes (A). (a) False (b) True

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