Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 159 · 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.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the water tank lid (c) the pipe colour (d) the tap handle
2. 2.True or false: energy used each second is measured in amperes (A). (a) False (b) True
3. 3.📏 How many kilowatts (kW) is 1100 W? =
4. 4.True or false: the ammeter is joined in series. (a) False (b) True
5. 5.📏 How many amperes (A) is 150 mA? =
6. 6.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
7. 7.True or false: the ammeter measures voltage. (a) False (b) True
8. 8.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 1000 (c) 60 (d) 100
9. 9.📏 Which unit measures voltage? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
10. 10.📏 How many milliamperes (mA) is 2.97 A?
11. 11.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) a narrow pipe (c) the flow of water (d) the pipe colour
12. 12.📏 Which unit measures resistance? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
13. 13.📏 How many ohms (Ω) is 5.6 kΩ?
14. 14.Which of these is measured in amperes (A)? (a) resistance (b) voltage (c) how much a part resists (d) current
15. 15.📏 How many kilowatts (kW) is 1600 W? =
16. 16.📏 How many ohms (Ω) is 2.2 kΩ?
17. 17.Which of these is measured in amperes (A)? (a) resistance (b) the push of a cell (c) voltage (d) the flow of charge
18. 18.📏 How many amperes (A) is 360 mA? =
19. 19.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 100 (c) 1024 (d) 10
20. 20.True or false: the voltmeter is joined in series. (a) True (b) False
21. 21.True or false: the voltmeter measures voltage. (a) True (b) False
22. 22.📏 How many milliamperes (mA) is 2.21 A?
23. 23.True or false: current is measured in amperes (A). (a) False (b) True
24. 24.Which of these is measured in ohms (Ω)? (a) voltage (b) how much a part resists (c) current (d) energy used each second
25. 25.Which of these is measured in volts (V)? (a) energy used each second (b) how much a part resists (c) voltage (d) power
26. 26.Which of these is measured in ohms (Ω)? (a) resistance (b) the push of a cell (c) current (d) power
27. 27.📏 How many kilowatts (kW) is 4200 W? =
28. 28.📏 How many watts (W) is 4.4 kW?
29. 29.True or false: the voltmeter measures current. (a) True (b) False
30. 30.📏 How many kilowatts (kW) is 200 W? =
31. 31.📏 Which unit measures power? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
32. 32.True or false: the voltmeter is joined across a part. (a) False (b) True
33. 33.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
34. 34.Which of these is measured in watts (W)? (a) current (b) the push of a cell (c) power (d) voltage
35. 35.📏 How many ohms (Ω) is 0.3 kΩ?
36. 36.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
37. 37.📏 How many ohms (Ω) is 3.5 kΩ?
38. 38.📏 How many milliamperes (mA) is 2.94 A?
39. 39.📏 How many ohms (Ω) is 0.8 kΩ?
40. 40.📏 How many milliamperes (mA) is 2.67 A?

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