Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 120 · 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: the ammeter measures current. (a) False (b) True
2. 2.📏 Which unit measures how much a part resists? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
3. 3.📏 How many watts (W) is 3.3 kW?
4. 4.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 10 (c) 100 (d) 60
5. 5.📏 How many watts (W) is 0.1 kW?
6. 6.True or false: energy used each second is measured in volts (V). (a) False (b) True
7. 7.📏 How many kilo-ohms (kΩ) is 6900 Ω? =
8. 8.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1024 (c) 100 (d) 1000
9. 9.Which of these is measured in volts (V)? (a) how much a part resists (b) current (c) the push of a cell (d) the flow of charge
10. 10.True or false: energy used each second is measured in watts (W). (a) False (b) True
11. 11.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
12. 12.📏 How many amperes (A) is 1680 mA? =
13. 13.Which of these is measured in ohms (Ω)? (a) voltage (b) resistance (c) current (d) the flow of charge
14. 14.📏 How many watts (W) is 5 kW?
15. 15.True or false: the ammeter is joined across a part. (a) False (b) True
16. 16.📏 How many amperes (A) is 570 mA? =
17. 17.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
18. 18.📏 How many kilo-ohms (kΩ) is 6200 Ω? =
19. 19.📏 How many milliamperes (mA) is 1.04 A?
20. 20.📏 How many amperes (A) is 130 mA? =
21. 21.Which of these is measured in volts (V)? (a) power (b) voltage (c) resistance (d) energy used each second
22. 22.📏 How many amperes (A) is 520 mA? =
23. 23.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
24. 24.📏 How many kilo-ohms (kΩ) is 3500 Ω? =
25. 25.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) the push of a cell (c) power (d) how much a part resists
26. 26.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
27. 27.Which of these is measured in watts (W)? (a) how much a part resists (b) the push of a cell (c) the flow of charge (d) energy used each second
28. 28.📏 Which unit measures resistance? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
29. 29.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the pipe colour (c) the tap handle (d) the water pressure
30. 30.True or false: the voltmeter is joined across a part. (a) False (b) True
31. 31.📏 Which unit measures current? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
32. 32.True or false: power is measured in ohms (Ω). (a) False (b) True
33. 33.📏 How many watts (W) is 1.6 kW?
34. 34.📏 How many amperes (A) is 2810 mA? =
35. 35.True or false: the push of a cell is measured in volts (V). (a) False (b) True
36. 36.True or false: the ammeter is joined in series. (a) True (b) False
37. 37.True or false: the flow of charge is measured in volts (V). (a) False (b) True
38. 38.True or false: voltage is measured in amperes (A). (a) False (b) True
39. 39.📏 Which unit measures power? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
40. 40.True or false: the voltmeter is joined in series. (a) False (b) True

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