Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 375 · 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 how much a part resists? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
2. 2.📏 Which unit measures power? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
3. 3.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
4. 4.📏 How many kilowatts (kW) is 2500 W? =
5. 5.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
6. 6.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
7. 7.📏 How many milliamperes (mA) is 0.23 A?
8. 8.True or false: how much a part resists is measured in volts (V). (a) False (b) True
9. 9.Which of these is measured in ohms (Ω)? (a) energy used each second (b) the flow of charge (c) power (d) resistance
10. 10.📏 How many amperes (A) is 2190 mA? =
11. 11.True or false: the ammeter is joined in series. (a) True (b) False
12. 12.Which of these is measured in amperes (A)? (a) resistance (b) the push of a cell (c) voltage (d) the flow of charge
13. 13.📏 How many kilo-ohms (kΩ) is 9000 Ω? =
14. 14.True or false: the voltmeter measures voltage. (a) False (b) True
15. 15.True or false: current is measured in ohms (Ω). (a) True (b) False
16. 16.True or false: energy used each second is measured in watts (W). (a) True (b) False
17. 17.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the water pressure (d) the pipe colour
18. 18.📏 How many kilo-ohms (kΩ) is 1200 Ω? =
19. 19.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the flow of water (c) a narrow pipe (d) the water pressure
20. 20.True or false: the voltmeter is joined across a part. (a) True (b) False
21. 21.True or false: the ammeter measures voltage. (a) False (b) True
22. 22.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
23. 23.📏 Which unit measures voltage? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
24. 24.📏 Which unit measures resistance? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
25. 25.📏 How many kilowatts (kW) is 1800 W? =
26. 26.📏 How many ohms (Ω) is 5 kΩ?
27. 27.True or false: the push of a cell is measured in watts (W). (a) True (b) False
28. 28.📏 How many kilowatts (kW) is 3100 W? =
29. 29.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 100 (c) 1000 (d) 1024
30. 30.📏 How many amperes (A) is 2690 mA? =
31. 31.📏 How many milliamperes (mA) is 0.06 A?
32. 32.True or false: the ammeter measures current. (a) False (b) True
33. 33.📏 How many milliamperes (mA) is 0.76 A?
34. 34.📏 Which unit measures current? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
35. 35.True or false: the push of a cell is measured in volts (V). (a) False (b) True
36. 36.Which of these is measured in volts (V)? (a) the push of a cell (b) power (c) resistance (d) current
37. 37.True or false: the ammeter is joined across a part. (a) False (b) True
38. 38.📏 How many amperes (A) is 400 mA? =
39. 39.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
40. 40.True or false: the voltmeter is joined in series. (a) True (b) False

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