Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 154 · 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 amperes (A)? (a) the push of a cell (b) energy used each second (c) the flow of charge (d) voltage
2. 2.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
3. 3.True or false: the push of a cell is measured in volts (V). (a) False (b) True
4. 4.Which of these is measured in ohms (Ω)? (a) energy used each second (b) voltage (c) resistance (d) the push of a cell
5. 5.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
6. 6.📏 Which unit measures voltage? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
7. 7.📏 Which unit measures energy used each second? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
8. 8.📏 Which unit measures resistance? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
9. 9.📏 How many milliamperes (mA) is 1.42 A?
10. 10.📏 How many watts (W) is 0.2 kW?
11. 11.📏 How many milliamperes (mA) is 0.01 A?
12. 12.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the pipe colour (c) the water pressure (d) the tap handle
13. 13.📏 How many watts (W) is 2.6 kW?
14. 14.True or false: the voltmeter measures voltage. (a) False (b) True
15. 15.📏 How many amperes (A) is 1590 mA? =
16. 16.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
17. 17.True or false: the ammeter is joined in series. (a) False (b) True
18. 18.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the pipe colour (c) the water pressure (d) the flow of water
19. 19.📏 How many milliamperes (mA) is 2.71 A?
20. 20.📏 How many kilo-ohms (kΩ) is 5800 Ω? =
21. 21.True or false: the ammeter is joined across a part. (a) False (b) True
22. 22.True or false: the voltmeter measures current. (a) False (b) True
23. 23.📏 How many amperes (A) is 1820 mA? =
24. 24.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 100 (c) 10 (d) 1024
25. 25.📏 Which unit measures the push of a cell? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
26. 26.📏 How many ohms (Ω) is 6.6 kΩ?
27. 27.📏 How many kilowatts (kW) is 250 W? =
28. 28.📏 How many ohms (Ω) is 8 kΩ?
29. 29.Which of these is measured in watts (W)? (a) the push of a cell (b) energy used each second (c) current (d) voltage
30. 30.📏 How many amperes (A) is 90 mA? =
31. 31.📏 How many watts (W) is 3.7 kW?
32. 32.📏 How many watts (W) is 3.1 kW?
33. 33.Which of these is measured in volts (V)? (a) resistance (b) how much a part resists (c) energy used each second (d) voltage
34. 34.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
35. 35.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
36. 36.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 60 (d) 1000
37. 37.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
38. 38.📏 How many kilo-ohms (kΩ) is 1100 Ω? =
39. 39.📏 How many ohms (Ω) is 5.1 kΩ?
40. 40.📏 How many ohms (Ω) is 5.6 kΩ?

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