Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 852 · 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.Which of these is measured in volts (V)? (a) power (b) resistance (c) voltage (d) current
2. 2.📏 Which unit measures power? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
3. 3.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the tap handle (c) the water tank lid (d) the water pressure
4. 4.📏 Which unit measures the push of a cell? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
5. 5.📏 How many ohms (Ω) is 2.9 kΩ?
6. 6.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
7. 7.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
8. 8.True or false: energy used each second is measured in amperes (A). (a) False (b) True
9. 9.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the water pressure (c) the pipe colour (d) the flow of water
10. 10.True or false: the ammeter is joined across a part. (a) True (b) False
11. 11.📏 How many kilowatts (kW) is 1700 W? =
12. 12.📏 How many amperes (A) is 1320 mA? =
13. 13.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1024 (c) 100 (d) 1000
14. 14.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
15. 15.Which of these is measured in volts (V)? (a) how much a part resists (b) energy used each second (c) the push of a cell (d) current
16. 16.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
17. 17.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
18. 18.True or false: the voltmeter is joined in series. (a) False (b) True
19. 19.📏 How many kilowatts (kW) is 3800 W? =
20. 20.Which of these is measured in watts (W)? (a) resistance (b) the push of a cell (c) current (d) power
21. 21.📏 How many milliamperes (mA) is 1.8 A?
22. 22.📏 How many kilo-ohms (kΩ) is 1300 Ω? =
23. 23.True or false: current is measured in amperes (A). (a) False (b) True
24. 24.📏 How many ohms (Ω) is 9.6 kΩ?
25. 25.📏 How many milliamperes (mA) is 0.64 A?
26. 26.📏 Which unit measures resistance? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
27. 27.📏 How many kilowatts (kW) is 2000 W? =
28. 28.True or false: the voltmeter measures voltage. (a) True (b) False
29. 29.Which of these is measured in watts (W)? (a) energy used each second (b) how much a part resists (c) the flow of charge (d) the push of a cell
30. 30.📏 How many watts (W) is 4.9 kW?
31. 31.📏 How many amperes (A) is 2520 mA? =
32. 32.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) a bigger tank (c) the water pressure (d) the flow of water
33. 33.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 1000 (c) 60 (d) 100
34. 34.📏 How many milliamperes (mA) is 1.42 A?
35. 35.📏 How many milliamperes (mA) is 1.82 A?
36. 36.📏 How many watts (W) is 2.8 kW?
37. 37.True or false: current is measured in volts (V). (a) True (b) False
38. 38.True or false: the voltmeter is joined across a part. (a) False (b) True
39. 39.True or false: the ammeter measures current. (a) True (b) False
40. 40.True or false: the voltmeter measures current. (a) False (b) True

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