Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 654 · 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 milliamperes (mA) is 1.12 A?
2. 2.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 100 (c) 1000 (d) 60
3. 3.Which of these is measured in watts (W)? (a) power (b) the push of a cell (c) resistance (d) current
4. 4.True or false: energy used each second is measured in watts (W). (a) False (b) True
5. 5.True or false: the voltmeter measures voltage. (a) True (b) False
6. 6.📏 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
7. 7.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the pipe colour (c) the tap handle (d) the water tank lid
8. 8.📏 How many kilo-ohms (kΩ) is 2300 Ω? =
9. 9.📏 How many ohms (Ω) is 0.6 kΩ?
10. 10.📏 How many amperes (A) is 2720 mA? =
11. 11.📏 How many ohms (Ω) is 4 kΩ?
12. 12.📏 How many amperes (A) is 330 mA? =
13. 13.True or false: voltage is measured in amperes (A). (a) True (b) False
14. 14.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
15. 15.📏 Which unit measures voltage? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
16. 16.📏 Which unit measures how much a part resists? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
17. 17.📏 Which unit measures the push of a cell? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
18. 18.True or false: the ammeter is joined across a part. (a) True (b) False
19. 19.📏 Which unit measures the flow of charge? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
20. 20.Which of these is measured in watts (W)? (a) how much a part resists (b) current (c) energy used each second (d) the flow of charge
21. 21.📏 Which unit measures current? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
22. 22.True or false: the voltmeter is joined across a part. (a) True (b) False
23. 23.Which of these is measured in volts (V)? (a) how much a part resists (b) voltage (c) resistance (d) the flow of charge
24. 24.📏 How many kilowatts (kW) is 700 W? =
25. 25.True or false: voltage is measured in volts (V). (a) True (b) False
26. 26.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1024 (c) 100 (d) 1000
27. 27.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
28. 28.📏 How many amperes (A) is 2460 mA? =
29. 29.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the pipe colour (c) the water pressure (d) a narrow pipe
30. 30.True or false: the flow of charge is measured in watts (W). (a) True (b) False
31. 31.📏 How many ohms (Ω) is 1 kΩ?
32. 32.📏 How many milliamperes (mA) is 2.48 A?
33. 33.True or false: the ammeter measures current. (a) True (b) False
34. 34.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
35. 35.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
36. 36.📏 How many watts (W) is 2.9 kW?
37. 37.📏 Which unit measures power? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
38. 38.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True
39. 39.📏 How many ohms (Ω) is 9.4 kΩ?
40. 40.📏 How many amperes (A) is 2570 mA? =

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