Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 345 · 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.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) a narrow pipe (c) the pipe colour (d) the flow of water
2. 2.True or false: the voltmeter measures current. (a) True (b) False
3. 3.True or false: the voltmeter measures voltage. (a) False (b) True
4. 4.📏 How many amperes (A) is 2670 mA? =
5. 5.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
6. 6.True or false: the ammeter measures current. (a) True (b) False
7. 7.True or false: the voltmeter is joined across a part. (a) True (b) False
8. 8.📏 How many kilowatts (kW) is 4600 W? =
9. 9.📏 How many ohms (Ω) is 7.1 kΩ?
10. 10.📏 How many milliamperes (mA) is 0.9 A?
11. 11.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
12. 12.True or false: the ammeter is joined across a part. (a) False (b) True
13. 13.📏 Which unit measures energy used each second? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
14. 14.📏 How many watts (W) is 0.1 kW?
15. 15.True or false: voltage is measured in volts (V). (a) False (b) True
16. 16.📏 Which unit measures the push of a cell? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
17. 17.📏 How many amperes (A) is 1790 mA? =
18. 18.📏 Which unit measures current? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
19. 19.True or false: resistance is measured in ohms (Ω). (a) False (b) True
20. 20.📏 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
21. 21.True or false: current is measured in amperes (A). (a) False (b) True
22. 22.📏 How many kilo-ohms (kΩ) is 5000 Ω? =
23. 23.True or false: energy used each second is measured in watts (W). (a) False (b) True
24. 24.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
25. 25.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 100 (c) 10 (d) 1000
26. 26.Which of these is measured in watts (W)? (a) resistance (b) the flow of charge (c) power (d) the push of a cell
27. 27.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1000 (d) 1024
28. 28.📏 How many kilo-ohms (kΩ) is 7200 Ω? =
29. 29.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
30. 30.True or false: how much a part resists is measured in volts (V). (a) False (b) True
31. 31.📏 How many milliamperes (mA) is 2.64 A?
32. 32.📏 How many kilowatts (kW) is 900 W? =
33. 33.Which of these is measured in volts (V)? (a) energy used each second (b) how much a part resists (c) the flow of charge (d) the push of a cell
34. 34.📏 Which unit measures resistance? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
35. 35.📏 How many milliamperes (mA) is 2.17 A?
36. 36.Which of these is measured in amperes (A)? (a) the push of a cell (b) voltage (c) how much a part resists (d) the flow of charge
37. 37.📏 How many kilo-ohms (kΩ) is 1300 Ω? =
38. 38.📏 How many amperes (A) is 170 mA? =
39. 39.Which of these is measured in amperes (A)? (a) power (b) current (c) resistance (d) the push of a cell
40. 40.📏 How many kilo-ohms (kΩ) is 8500 Ω? =

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