Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 902 · 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 of these is measured in watts (W)? (a) the push of a cell (b) the flow of charge (c) resistance (d) energy used each second
2. 2.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a narrow pipe (c) a bigger tank (d) the water pressure
3. 3.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 60 (c) 10 (d) 100
4. 4.📏 How many ohms (Ω) is 0.4 kΩ?
5. 5.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water pressure (c) the tap handle (d) the water tank lid
6. 6.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1024 (d) 1000
7. 7.📏 How many ohms (Ω) is 7.7 kΩ?
8. 8.True or false: voltage is measured in amperes (A). (a) True (b) False
9. 9.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
10. 10.Which of these is measured in amperes (A)? (a) power (b) current (c) voltage (d) the push of a cell
11. 11.📏 How many kilo-ohms (kΩ) is 2300 Ω? =
12. 12.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
13. 13.📏 Which unit measures energy used each second? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
14. 14.📏 How many milliamperes (mA) is 1.18 A?
15. 15.📏 Which unit measures how much a part resists? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
16. 16.True or false: voltage is measured in watts (W). (a) False (b) True
17. 17.📏 How many amperes (A) is 1620 mA? =
18. 18.📏 How many ohms (Ω) is 1.6 kΩ?
19. 19.📏 How many kilo-ohms (kΩ) is 9400 Ω? =
20. 20.📏 How many watts (W) is 2.7 kW?
21. 21.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) current (c) energy used each second (d) resistance
22. 22.Which of these is measured in amperes (A)? (a) the flow of charge (b) resistance (c) how much a part resists (d) voltage
23. 23.True or false: current is measured in ohms (Ω). (a) True (b) False
24. 24.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
25. 25.True or false: the ammeter is joined in series. (a) False (b) True
26. 26.📏 How many kilowatts (kW) is 350 W? =
27. 27.True or false: current is measured in amperes (A). (a) True (b) False
28. 28.True or false: resistance is measured in ohms (Ω). (a) True (b) False
29. 29.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
30. 30.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
31. 31.True or false: the voltmeter measures voltage. (a) False (b) True
32. 32.📏 How many kilowatts (kW) is 1300 W? =
33. 33.True or false: resistance is measured in amperes (A). (a) True (b) False
34. 34.📏 How many kilo-ohms (kΩ) is 3200 Ω? =
35. 35.📏 How many kilowatts (kW) is 1800 W? =
36. 36.📏 How many amperes (A) is 1920 mA? =
37. 37.📏 How many kilo-ohms (kΩ) is 7400 Ω? =
38. 38.True or false: the ammeter is joined across a part. (a) True (b) False
39. 39.Which of these is measured in volts (V)? (a) energy used each second (b) the flow of charge (c) voltage (d) how much a part resists
40. 40.📏 How many milliamperes (mA) is 1.44 A?

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