Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 359 · 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 unit measures power? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
2. 2.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
3. 3.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 1000 (d) 100
4. 4.📏 How many kilo-ohms (kΩ) is 5900 Ω? =
5. 5.📏 Which unit measures voltage? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
6. 6.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 10 (c) 1000 (d) 100
7. 7.📏 How many kilo-ohms (kΩ) is 7200 Ω? =
8. 8.True or false: the voltmeter measures voltage. (a) False (b) True
9. 9.📏 How many kilowatts (kW) is 4450 W? =
10. 10.True or false: power is measured in watts (W). (a) True (b) False
11. 11.Which of these is measured in volts (V)? (a) the push of a cell (b) current (c) power (d) the flow of charge
12. 12.📏 How many watts (W) is 3.1 kW?
13. 13.📏 How many amperes (A) is 1210 mA? =
14. 14.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
15. 15.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) voltage (c) the flow of charge (d) how much a part resists
16. 16.Which of these is measured in amperes (A)? (a) voltage (b) resistance (c) current (d) how much a part resists
17. 17.📏 How many milliamperes (mA) is 0.35 A?
18. 18.📏 How many milliamperes (mA) is 1.09 A?
19. 19.📏 Which unit measures how much a part resists? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
20. 20.True or false: the ammeter measures voltage. (a) False (b) True
21. 21.True or false: the ammeter is joined across a part. (a) False (b) True
22. 22.True or false: current is measured in volts (V). (a) False (b) True
23. 23.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) resistance (c) energy used each second (d) power
24. 24.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
25. 25.True or false: the push of a cell is measured in volts (V). (a) False (b) True
26. 26.📏 How many ohms (Ω) is 6.9 kΩ?
27. 27.📏 How many kilowatts (kW) is 4500 W? =
28. 28.📏 How many kilowatts (kW) is 4400 W? =
29. 29.📏 How many milliamperes (mA) is 1.17 A?
30. 30.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the water pressure (c) the flow of water (d) a narrow pipe
31. 31.True or false: the ammeter measures current. (a) False (b) True
32. 32.📏 How many milliamperes (mA) is 1.04 A?
33. 33.True or false: the voltmeter measures current. (a) True (b) False
34. 34.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the water pressure (d) the pipe colour
35. 35.True or false: the ammeter is joined in series. (a) False (b) True
36. 36.📏 Which unit measures current? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
37. 37.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
38. 38.True or false: energy used each second is measured in watts (W). (a) True (b) False
39. 39.📏 How many amperes (A) is 760 mA? =
40. 40.📏 How many kilowatts (kW) is 1900 W? =

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