Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 273 · 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.True or false: the voltmeter is joined in series. (a) False (b) True
2. 2.📏 How many amperes (A) is 660 mA? =
3. 3.True or false: energy used each second is measured in watts (W). (a) True (b) False
4. 4.Which of these is measured in ohms (Ω)? (a) voltage (b) power (c) how much a part resists (d) the push of a cell
5. 5.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the tap handle (c) the water tank lid (d) the water pressure
6. 6.📏 How many milliamperes (mA) is 0.35 A?
7. 7.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 10 (d) 1000
8. 8.Which of these is measured in volts (V)? (a) the flow of charge (b) resistance (c) power (d) voltage
9. 9.True or false: power is measured in volts (V). (a) False (b) True
10. 10.📏 How many ohms (Ω) is 4.2 kΩ?
11. 11.True or false: voltage is measured in volts (V). (a) False (b) True
12. 12.True or false: the ammeter is joined in series. (a) False (b) True
13. 13.📏 How many ohms (Ω) is 0.6 kΩ?
14. 14.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
15. 15.📏 How many kilowatts (kW) is 2250 W? =
16. 16.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 1000 (c) 60 (d) 10
17. 17.📏 Which unit measures voltage? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
18. 18.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the water pressure (c) a narrow pipe (d) the pipe colour
19. 19.True or false: current is measured in amperes (A). (a) False (b) True
20. 20.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
21. 21.📏 How many amperes (A) is 2040 mA? =
22. 22.Which of these is measured in volts (V)? (a) current (b) the flow of charge (c) energy used each second (d) the push of a cell
23. 23.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
24. 24.📏 How many milliamperes (mA) is 1.71 A?
25. 25.📏 How many watts (W) is 0.2 kW?
26. 26.📏 How many watts (W) is 3.9 kW?
27. 27.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
28. 28.📏 How many ohms (Ω) is 3 kΩ?
29. 29.📏 Which unit measures current? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
30. 30.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
31. 31.Which of these is measured in amperes (A)? (a) power (b) resistance (c) energy used each second (d) the flow of charge
32. 32.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
33. 33.📏 How many ohms (Ω) is 3.5 kΩ?
34. 34.True or false: the voltmeter measures current. (a) False (b) True
35. 35.📏 How many amperes (A) is 2450 mA? =
36. 36.📏 How many ohms (Ω) is 1.6 kΩ?
37. 37.📏 How many amperes (A) is 1660 mA? =
38. 38.📏 Which unit measures how much a part resists? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
39. 39.📏 How many milliamperes (mA) is 2.88 A?
40. 40.Which of these is measured in amperes (A)? (a) how much a part resists (b) voltage (c) current (d) power

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