Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 584 · 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: resistance is measured in ohms (Ω). (a) False (b) True
2. 2.True or false: the voltmeter is joined across a part. (a) True (b) False
3. 3.📏 How many kilo-ohms (kΩ) is 1600 Ω? =
4. 4.True or false: the ammeter is joined across a part. (a) False (b) True
5. 5.Which of these is measured in amperes (A)? (a) voltage (b) how much a part resists (c) energy used each second (d) current
6. 6.📏 How many amperes (A) is 2240 mA? =
7. 7.📏 How many ohms (Ω) is 6.6 kΩ?
8. 8.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the pipe colour (c) the water tank lid (d) the tap handle
9. 9.📏 Which unit measures the flow of charge? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
10. 10.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 60 (c) 10 (d) 100
11. 11.True or false: power is measured in volts (V). (a) False (b) True
12. 12.True or false: the ammeter measures voltage. (a) True (b) False
13. 13.📏 How many milliamperes (mA) is 2.91 A?
14. 14.📏 How many watts (W) is 5 kW?
15. 15.True or false: voltage is measured in volts (V). (a) False (b) True
16. 16.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
17. 17.📏 How many amperes (A) is 120 mA? =
18. 18.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 1000 (c) 100 (d) 10
19. 19.📏 How many milliamperes (mA) is 1.28 A?
20. 20.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
21. 21.Which of these is measured in watts (W)? (a) voltage (b) energy used each second (c) resistance (d) current
22. 22.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
23. 23.📏 Which unit measures resistance? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
24. 24.True or false: the voltmeter measures current. (a) False (b) True
25. 25.📏 Which unit measures energy used each second? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
26. 26.📏 How many milliamperes (mA) is 2.55 A?
27. 27.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
28. 28.📏 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
29. 29.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the water pressure (c) the flow of water (d) the pipe colour
30. 30.Which of these is measured in amperes (A)? (a) voltage (b) resistance (c) how much a part resists (d) the flow of charge
31. 31.True or false: the ammeter is joined in series. (a) True (b) False
32. 32.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True
33. 33.📏 How many kilo-ohms (kΩ) is 3900 Ω? =
34. 34.📏 How many kilo-ohms (kΩ) is 3700 Ω? =
35. 35.True or false: the voltmeter is joined in series. (a) False (b) True
36. 36.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
37. 37.📏 How many kilo-ohms (kΩ) is 6000 Ω? =
38. 38.Which of these is measured in ohms (Ω)? (a) energy used each second (b) resistance (c) power (d) the push of a cell
39. 39.📏 How many kilowatts (kW) is 2550 W? =
40. 40.📏 How many watts (W) is 3.9 kW?

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