Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 397 · 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.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
2. 2.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) a narrow pipe (c) the flow of water (d) the water pressure
3. 3.📏 How many watts (W) is 0.1 kW?
4. 4.📏 How many milliamperes (mA) is 1.69 A?
5. 5.📏 How many milliamperes (mA) is 2.85 A?
6. 6.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) a narrow pipe (c) the pipe colour (d) the water pressure
7. 7.True or false: current is measured in watts (W). (a) True (b) False
8. 8.Which of these is measured in watts (W)? (a) how much a part resists (b) energy used each second (c) resistance (d) the flow of charge
9. 9.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
10. 10.Which of these is measured in volts (V)? (a) current (b) the push of a cell (c) power (d) the flow of charge
11. 11.📏 How many milliamperes (mA) is 1.9 A?
12. 12.📏 Which unit measures resistance? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
13. 13.Which of these is measured in volts (V)? (a) voltage (b) the flow of charge (c) current (d) resistance
14. 14.True or false: power is measured in watts (W). (a) False (b) True
15. 15.📏 Which unit measures how much a part resists? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
16. 16.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
17. 17.📏 How many kilowatts (kW) is 3050 W? =
18. 18.Which of these is measured in watts (W)? (a) resistance (b) how much a part resists (c) the flow of charge (d) power
19. 19.📏 Which unit measures power? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
20. 20.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 10 (c) 1000 (d) 100
21. 21.📏 Which unit measures the flow of charge? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
22. 22.True or false: power is measured in volts (V). (a) True (b) False
23. 23.📏 How many kilo-ohms (kΩ) is 1200 Ω? =
24. 24.📏 How many amperes (A) is 2070 mA? =
25. 25.True or false: the ammeter is joined in series. (a) True (b) False
26. 26.📏 How many kilowatts (kW) is 4950 W? =
27. 27.True or false: voltage is measured in volts (V). (a) False (b) True
28. 28.📏 How many kilo-ohms (kΩ) is 7700 Ω? =
29. 29.Which of these is measured in ohms (Ω)? (a) energy used each second (b) voltage (c) resistance (d) the push of a cell
30. 30.📏 How many kilo-ohms (kΩ) is 5500 Ω? =
31. 31.📏 How many amperes (A) is 2010 mA? =
32. 32.True or false: resistance is measured in ohms (Ω). (a) True (b) False
33. 33.True or false: current is measured in amperes (A). (a) False (b) True
34. 34.📏 How many watts (W) is 3.1 kW?
35. 35.📏 How many amperes (A) is 50 mA? =
36. 36.📏 How many kilowatts (kW) is 1700 W? =
37. 37.📏 How many watts (W) is 0.7 kW?
38. 38.True or false: the voltmeter is joined in series. (a) False (b) True
39. 39.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
40. 40.📏 How many kilowatts (kW) is 3650 W? =

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