Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 27 · 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) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
2. 2.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the water tank lid (c) the tap handle (d) the pipe colour
3. 3.📏 How many watts (W) is 3.9 kW?
4. 4.📏 How many amperes (A) is 680 mA? =
5. 5.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the flow of water (c) the water pressure (d) a narrow pipe
6. 6.True or false: power is measured in watts (W). (a) True (b) False
7. 7.📏 Which unit measures resistance? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
8. 8.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
9. 9.📏 Which unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
10. 10.📏 Which unit measures power? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
11. 11.📏 Which unit measures voltage? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
12. 12.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) energy used each second (c) the push of a cell (d) the flow of charge
13. 13.Which of these is measured in amperes (A)? (a) voltage (b) power (c) current (d) the push of a cell
14. 14.True or false: the ammeter measures voltage. (a) True (b) False
15. 15.True or false: the ammeter measures current. (a) True (b) False
16. 16.True or false: power is measured in volts (V). (a) False (b) True
17. 17.📏 How many watts (W) is 2.3 kW?
18. 18.📏 Which unit measures the push of a cell? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
19. 19.📏 How many milliamperes (mA) is 2.02 A?
20. 20.True or false: resistance is measured in amperes (A). (a) False (b) True
21. 21.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
22. 22.📏 How many kilowatts (kW) is 3700 W? =
23. 23.Which of these is measured in amperes (A)? (a) how much a part resists (b) the flow of charge (c) voltage (d) power
24. 24.True or false: the voltmeter measures voltage. (a) False (b) True
25. 25.True or false: resistance is measured in ohms (Ω). (a) False (b) True
26. 26.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
27. 27.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 1000 (c) 60 (d) 100
28. 28.True or false: the ammeter is joined in series. (a) False (b) True
29. 29.Which of these is measured in volts (V)? (a) the flow of charge (b) current (c) energy used each second (d) voltage
30. 30.📏 How many watts (W) is 1.1 kW?
31. 31.📏 How many kilowatts (kW) is 4000 W? =
32. 32.True or false: voltage is measured in volts (V). (a) False (b) True
33. 33.📏 How many kilo-ohms (kΩ) is 6800 Ω? =
34. 34.True or false: voltage is measured in amperes (A). (a) False (b) True
35. 35.📏 How many watts (W) is 1.4 kW?
36. 36.📏 How many kilowatts (kW) is 1600 W? =
37. 37.True or false: the flow of charge is measured in watts (W). (a) True (b) False
38. 38.Which of these is measured in ohms (Ω)? (a) resistance (b) voltage (c) the push of a cell (d) the flow of charge
39. 39.📏 How many amperes (A) is 2520 mA? =
40. 40.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter

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