Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 550 · 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 watts (W) is 4.5 kW?
2. 2.True or false: the ammeter measures current. (a) True (b) False
3. 3.📏 How many milliamperes (mA) is 1.55 A?
4. 4.True or false: power is measured in volts (V). (a) True (b) False
5. 5.Which of these is measured in amperes (A)? (a) voltage (b) current (c) resistance (d) the push of a cell
6. 6.True or false: the voltmeter is joined across a part. (a) False (b) True
7. 7.📏 How many amperes (A) is 2750 mA? =
8. 8.True or false: voltage is measured in amperes (A). (a) False (b) True
9. 9.📏 How many kilowatts (kW) is 950 W? =
10. 10.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
11. 11.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
12. 12.Which of these is measured in volts (V)? (a) voltage (b) current (c) resistance (d) the flow of charge
13. 13.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the tap handle (c) the pipe colour (d) the water pressure
14. 14.True or false: the ammeter is joined across a part. (a) False (b) True
15. 15.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
16. 16.True or false: the ammeter is joined in series. (a) False (b) True
17. 17.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 100 (c) 10 (d) 60
18. 18.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) a narrow pipe (c) the pipe colour (d) the flow of water
19. 19.True or false: the push of a cell is measured in volts (V). (a) False (b) True
20. 20.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) the flow of charge (c) resistance (d) power
21. 21.Which of these is measured in watts (W)? (a) how much a part resists (b) voltage (c) power (d) resistance
22. 22.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True
23. 23.📏 Which unit measures resistance? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
24. 24.📏 How many watts (W) is 4.7 kW?
25. 25.📏 How many milliamperes (mA) is 1.36 A?
26. 26.📏 Which unit measures current? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
27. 27.True or false: the ammeter measures voltage. (a) True (b) False
28. 28.Which of these is measured in amperes (A)? (a) voltage (b) the flow of charge (c) power (d) resistance
29. 29.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
30. 30.📏 How many milliamperes (mA) is 2.86 A?
31. 31.📏 How many milliamperes (mA) is 2.51 A?
32. 32.📏 How many watts (W) is 1.5 kW?
33. 33.True or false: the voltmeter measures current. (a) False (b) True
34. 34.📏 Which unit measures energy used each second? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
35. 35.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
36. 36.True or false: voltage is measured in volts (V). (a) True (b) False
37. 37.True or false: the voltmeter measures voltage. (a) True (b) False
38. 38.True or false: resistance is measured in ohms (Ω). (a) True (b) False
39. 39.Which of these is measured in watts (W)? (a) how much a part resists (b) energy used each second (c) the push of a cell (d) voltage
40. 40.📏 How many kilo-ohms (kΩ) is 1700 Ω? =

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