Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 233 · 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 is joined across a part? (a) ammeter (b) voltmeter
2. 2.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
3. 3.True or false: the ammeter is joined across a part. (a) False (b) True
4. 4.📏 How many ohms (Ω) is 3.7 kΩ?
5. 5.True or false: current is measured in amperes (A). (a) True (b) False
6. 6.📏 Which unit measures power? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
7. 7.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
8. 8.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
9. 9.📏 How many kilowatts (kW) is 800 W? =
10. 10.Which of these is measured in volts (V)? (a) the flow of charge (b) energy used each second (c) voltage (d) current
11. 11.📏 How many ohms (Ω) is 6.4 kΩ?
12. 12.📏 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
13. 13.📏 How many milliamperes (mA) is 2.47 A?
14. 14.True or false: the voltmeter measures current. (a) False (b) True
15. 15.Which of these is measured in ohms (Ω)? (a) energy used each second (b) the flow of charge (c) how much a part resists (d) power
16. 16.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the tap handle (c) the pipe colour (d) the water tank lid
17. 17.True or false: resistance is measured in amperes (A). (a) True (b) False
18. 18.📏 Which unit measures voltage? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
19. 19.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
20. 20.📏 How many amperes (A) is 760 mA? =
21. 21.📏 How many milliamperes (mA) is 0.39 A?
22. 22.True or false: power is measured in watts (W). (a) True (b) False
23. 23.📏 How many kilo-ohms (kΩ) is 3300 Ω? =
24. 24.📏 How many kilowatts (kW) is 3650 W? =
25. 25.True or false: the voltmeter measures voltage. (a) True (b) False
26. 26.📏 How many amperes (A) is 2010 mA? =
27. 27.Which of these is measured in watts (W)? (a) the push of a cell (b) resistance (c) energy used each second (d) how much a part resists
28. 28.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 100 (c) 1024 (d) 10
29. 29.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
30. 30.📏 How many milliamperes (mA) is 0.03 A?
31. 31.📏 How many watts (W) is 0.2 kW?
32. 32.True or false: voltage is measured in ohms (Ω). (a) False (b) True
33. 33.True or false: energy used each second is measured in watts (W). (a) True (b) False
34. 34.📏 How many milliamperes (mA) is 1.25 A?
35. 35.📏 How many kilowatts (kW) is 1650 W? =
36. 36.📏 How many kilo-ohms (kΩ) is 3200 Ω? =
37. 37.True or false: the ammeter is joined in series. (a) False (b) True
38. 38.True or false: the push of a cell is measured in watts (W). (a) False (b) True
39. 39.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 1000 (c) 10 (d) 60
40. 40.📏 Which unit measures current? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)

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