Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 10 · 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 unit measures voltage? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
2. 2.Which of these is measured in watts (W)? (a) voltage (b) energy used each second (c) the flow of charge (d) how much a part resists
3. 3.📏 How many ohms (Ω) is 4.4 kΩ?
4. 4.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 100 (c) 1000 (d) 1024
5. 5.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the flow of water (c) the water pressure (d) a narrow pipe
6. 6.Which of these is measured in watts (W)? (a) the push of a cell (b) voltage (c) power (d) current
7. 7.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
8. 8.📏 Which unit measures resistance? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
9. 9.📏 How many watts (W) is 0.5 kW?
10. 10.📏 How many milliamperes (mA) is 1.46 A?
11. 11.Which of these is measured in volts (V)? (a) voltage (b) energy used each second (c) the flow of charge (d) how much a part resists
12. 12.📏 How many kilo-ohms (kΩ) is 7500 Ω? =
13. 13.📏 How many milliamperes (mA) is 1.74 A?
14. 14.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 1000 (d) 100
15. 15.📏 How many watts (W) is 4.3 kW?
16. 16.True or false: voltage is measured in volts (V). (a) False (b) True
17. 17.📏 How many kilo-ohms (kΩ) is 9300 Ω? =
18. 18.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the pipe colour (c) the flow of water (d) a narrow pipe
19. 19.📏 How many milliamperes (mA) is 0.61 A?
20. 20.True or false: the voltmeter is joined across a part. (a) True (b) False
21. 21.📏 Which unit measures the push of a cell? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
22. 22.📏 How many amperes (A) is 1240 mA? =
23. 23.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
24. 24.True or false: the push of a cell is measured in volts (V). (a) False (b) True
25. 25.📏 Which unit measures power? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
26. 26.📏 How many amperes (A) is 2340 mA? =
27. 27.📏 Which unit measures current? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
28. 28.📏 How many ohms (Ω) is 9.2 kΩ?
29. 29.📏 How many ohms (Ω) is 4 kΩ?
30. 30.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
31. 31.True or false: resistance is measured in watts (W). (a) False (b) True
32. 32.📏 How many amperes (A) is 2890 mA? =
33. 33.True or false: voltage is measured in watts (W). (a) False (b) True
34. 34.📏 Which unit measures the flow of charge? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
35. 35.Which of these is measured in ohms (Ω)? (a) voltage (b) power (c) how much a part resists (d) the flow of charge
36. 36.📏 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
37. 37.📏 How many kilo-ohms (kΩ) is 6100 Ω? =
38. 38.True or false: the voltmeter is joined in series. (a) True (b) False
39. 39.📏 How many kilowatts (kW) is 1650 W? =
40. 40.📏 Which unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)

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