Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 676 · 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, current is like … (a) the flow of water (b) the pipe colour (c) a narrow pipe (d) the water pressure
2. 2.True or false: energy used each second is measured in watts (W). (a) True (b) False
3. 3.📏 How many watts (W) is 1 kW?
4. 4.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water pressure (c) the water tank lid (d) the pipe colour
5. 5.📏 How many milliamperes (mA) is 2.21 A?
6. 6.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 1000 (c) 100 (d) 10
7. 7.True or false: the push of a cell is measured in volts (V). (a) True (b) False
8. 8.📏 Which unit measures the push of a cell? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
9. 9.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
10. 10.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
11. 11.📏 Which unit measures current? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
12. 12.Which of these is measured in watts (W)? (a) how much a part resists (b) power (c) the flow of charge (d) current
13. 13.Which of these is measured in volts (V)? (a) power (b) the push of a cell (c) how much a part resists (d) energy used each second
14. 14.Which of these is measured in volts (V)? (a) how much a part resists (b) energy used each second (c) resistance (d) voltage
15. 15.True or false: resistance is measured in amperes (A). (a) False (b) True
16. 16.📏 Which unit measures voltage? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
17. 17.Which of these is measured in ohms (Ω)? (a) resistance (b) the push of a cell (c) voltage (d) current
18. 18.Which of these is measured in watts (W)? (a) resistance (b) energy used each second (c) the flow of charge (d) current
19. 19.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 60 (d) 1000
20. 20.True or false: the ammeter is joined across a part. (a) False (b) True
21. 21.True or false: the ammeter measures voltage. (a) False (b) True
22. 22.True or false: power is measured in ohms (Ω). (a) False (b) True
23. 23.📏 How many kilo-ohms (kΩ) is 5200 Ω? =
24. 24.True or false: the ammeter is joined in series. (a) False (b) True
25. 25.📏 How many ohms (Ω) is 2.8 kΩ?
26. 26.True or false: the voltmeter is joined across a part. (a) False (b) True
27. 27.Which of these is measured in amperes (A)? (a) power (b) voltage (c) the push of a cell (d) current
28. 28.📏 How many milliamperes (mA) is 0.21 A?
29. 29.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
30. 30.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
31. 31.📏 How many ohms (Ω) is 9.2 kΩ?
32. 32.📏 How many ohms (Ω) is 8.4 kΩ?
33. 33.📏 How many ohms (Ω) is 0.5 kΩ?
34. 34.📏 Which unit measures energy used each second? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
35. 35.📏 How many amperes (A) is 930 mA? =
36. 36.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True
37. 37.True or false: the push of a cell is measured in amperes (A). (a) False (b) True
38. 38.True or false: the voltmeter measures voltage. (a) False (b) True
39. 39.📏 How many ohms (Ω) is 4.2 kΩ?
40. 40.True or false: current is measured in amperes (A). (a) False (b) True

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