Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 487 · 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.📏 How many amperes (A) is 2560 mA? =
2. 2.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 60 (c) 10 (d) 100
3. 3.True or false: the voltmeter is joined in series. (a) False (b) True
4. 4.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
5. 5.True or false: the voltmeter is joined across a part. (a) False (b) True
6. 6.True or false: the flow of charge is measured in volts (V). (a) True (b) False
7. 7.Which of these is measured in ohms (Ω)? (a) energy used each second (b) how much a part resists (c) power (d) voltage
8. 8.📏 How many milliamperes (mA) is 1.25 A?
9. 9.True or false: the ammeter is joined across a part. (a) False (b) True
10. 10.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
11. 11.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the tap handle (c) the water pressure (d) the water tank lid
12. 12.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
13. 13.Which of these is measured in watts (W)? (a) voltage (b) how much a part resists (c) the push of a cell (d) power
14. 14.Which of these is measured in volts (V)? (a) the flow of charge (b) resistance (c) power (d) the push of a cell
15. 15.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
16. 16.📏 How many kilowatts (kW) is 2200 W? =
17. 17.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
18. 18.📏 How many milliamperes (mA) is 0.45 A?
19. 19.📏 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
20. 20.Which of these is measured in volts (V)? (a) resistance (b) energy used each second (c) the flow of charge (d) voltage
21. 21.📏 How many watts (W) is 2.4 kW?
22. 22.📏 How many kilo-ohms (kΩ) is 5900 Ω? =
23. 23.📏 Which unit measures power? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
24. 24.True or false: power is measured in ohms (Ω). (a) False (b) True
25. 25.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
26. 26.True or false: current is measured in watts (W). (a) False (b) True
27. 27.📏 How many amperes (A) is 210 mA? =
28. 28.📏 How many milliamperes (mA) is 2.1 A?
29. 29.True or false: current is measured in amperes (A). (a) True (b) False
30. 30.📏 Which unit measures voltage? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
31. 31.True or false: the voltmeter measures voltage. (a) False (b) True
32. 32.True or false: voltage is measured in volts (V). (a) True (b) False
33. 33.True or false: power is measured in amperes (A). (a) False (b) True
34. 34.📏 Which unit measures the push of a cell? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
35. 35.True or false: voltage is measured in ohms (Ω). (a) True (b) False
36. 36.📏 How many milliamperes (mA) is 1.5 A?
37. 37.True or false: the voltmeter measures current. (a) False (b) True
38. 38.Which of these is measured in ohms (Ω)? (a) resistance (b) power (c) the push of a cell (d) the flow of charge
39. 39.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
40. 40.📏 How many amperes (A) is 1260 mA? =

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