Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 329 · 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 current? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
2. 2.Which of these is measured in ohms (Ω)? (a) current (b) power (c) voltage (d) resistance
3. 3.📏 How many watts (W) is 2.4 kW?
4. 4.📏 Which unit measures resistance? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
5. 5.Which of these is measured in watts (W)? (a) voltage (b) current (c) the flow of charge (d) power
6. 6.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
7. 7.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
8. 8.📏 How many kilo-ohms (kΩ) is 5800 Ω? =
9. 9.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) a narrow pipe (d) the flow of water
10. 10.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the pipe colour (c) the water tank lid (d) the water pressure
11. 11.📏 How many kilowatts (kW) is 950 W? =
12. 12.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 1000 (c) 100 (d) 10
13. 13.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 10 (c) 100 (d) 1024
14. 14.True or false: the voltmeter measures voltage. (a) True (b) False
15. 15.📏 Which unit measures the push of a cell? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
16. 16.True or false: voltage is measured in volts (V). (a) True (b) False
17. 17.📏 How many watts (W) is 1 kW?
18. 18.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
19. 19.True or false: the ammeter measures voltage. (a) False (b) True
20. 20.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
21. 21.True or false: the voltmeter is joined across a part. (a) True (b) False
22. 22.📏 How many milliamperes (mA) is 1.37 A?
23. 23.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
24. 24.True or false: power is measured in watts (W). (a) False (b) True
25. 25.📏 How many milliamperes (mA) is 0.82 A?
26. 26.True or false: the voltmeter measures current. (a) True (b) False
27. 27.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
28. 28.True or false: the voltmeter is joined in series. (a) False (b) True
29. 29.📏 How many amperes (A) is 1290 mA? =
30. 30.📏 How many kilo-ohms (kΩ) is 8000 Ω? =
31. 31.True or false: the flow of charge is measured in volts (V). (a) False (b) True
32. 32.📏 How many kilowatts (kW) is 1550 W? =
33. 33.Which of these is measured in volts (V)? (a) the flow of charge (b) resistance (c) the push of a cell (d) how much a part resists
34. 34.📏 How many ohms (Ω) is 7.6 kΩ?
35. 35.Which of these is measured in watts (W)? (a) voltage (b) current (c) resistance (d) energy used each second
36. 36.📏 How many milliamperes (mA) is 1.98 A?
37. 37.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
38. 38.📏 How many kilo-ohms (kΩ) is 1300 Ω? =
39. 39.📏 How many amperes (A) is 2210 mA? =
40. 40.True or false: the ammeter is joined in series. (a) True (b) False

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