Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 512 · 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, resistance is like … (a) the water pressure (b) a narrow pipe (c) a bigger tank (d) the flow of water
2. 2.📏 Which unit measures power? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
3. 3.📏 How many kilowatts (kW) is 700 W? =
4. 4.📏 How many kilo-ohms (kΩ) is 2600 Ω? =
5. 5.True or false: the ammeter measures voltage. (a) False (b) True
6. 6.📏 How many milliamperes (mA) is 0.11 A?
7. 7.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1024 (d) 1000
8. 8.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
9. 9.📏 How many amperes (A) is 540 mA? =
10. 10.True or false: power is measured in ohms (Ω). (a) True (b) False
11. 11.True or false: resistance is measured in watts (W). (a) True (b) False
12. 12.Which of these is measured in amperes (A)? (a) current (b) energy used each second (c) power (d) the push of a cell
13. 13.📏 How many kilo-ohms (kΩ) is 5000 Ω? =
14. 14.True or false: the push of a cell is measured in watts (W). (a) True (b) False
15. 15.📏 Which unit measures resistance? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
16. 16.📏 Which unit measures voltage? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
17. 17.Which of these is measured in watts (W)? (a) the flow of charge (b) how much a part resists (c) voltage (d) power
18. 18.📏 How many kilo-ohms (kΩ) is 2900 Ω? =
19. 19.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
20. 20.True or false: the voltmeter measures current. (a) False (b) True
21. 21.True or false: the voltmeter is joined in series. (a) False (b) True
22. 22.📏 How many watts (W) is 0.3 kW?
23. 23.True or false: the voltmeter measures voltage. (a) True (b) False
24. 24.📏 How many kilowatts (kW) is 1450 W? =
25. 25.📏 Which unit measures the push of a cell? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
26. 26.📏 How many milliamperes (mA) is 1.13 A?
27. 27.True or false: the voltmeter is joined across a part. (a) False (b) True
28. 28.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) resistance (c) voltage (d) energy used each second
29. 29.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 100 (c) 1000 (d) 60
30. 30.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
31. 31.Which of these is measured in watts (W)? (a) energy used each second (b) the push of a cell (c) resistance (d) voltage
32. 32.📏 How many milliamperes (mA) is 0.36 A?
33. 33.📏 How many kilo-ohms (kΩ) is 1600 Ω? =
34. 34.📏 How many kilowatts (kW) is 150 W? =
35. 35.True or false: power is measured in watts (W). (a) True (b) False
36. 36.📏 How many amperes (A) is 280 mA? =
37. 37.📏 How many kilowatts (kW) is 3400 W? =
38. 38.Which of these is measured in volts (V)? (a) the push of a cell (b) the flow of charge (c) how much a part resists (d) energy used each second
39. 39.📏 How many milliamperes (mA) is 1.83 A?
40. 40.True or false: power is measured in volts (V). (a) False (b) True

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