Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 625 · 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 unit measures the push of a cell? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
2. 2.📏 Which unit measures resistance? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
3. 3.📏 How many kilowatts (kW) is 3400 W? =
4. 4.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
5. 5.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the flow of water (c) the pipe colour (d) the water pressure
6. 6.📏 Which unit measures energy used each second? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
7. 7.True or false: the push of a cell is measured in amperes (A). (a) False (b) True
8. 8.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the water pressure (c) the pipe colour (d) the tap handle
9. 9.📏 How many milliamperes (mA) is 0.44 A?
10. 10.True or false: the ammeter measures voltage. (a) False (b) True
11. 11.📏 How many amperes (A) is 2880 mA? =
12. 12.📏 How many amperes (A) is 200 mA? =
13. 13.📏 Which unit measures current? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
14. 14.Which of these is measured in watts (W)? (a) the push of a cell (b) voltage (c) current (d) energy used each second
15. 15.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 100 (c) 60 (d) 1000
16. 16.📏 How many milliamperes (mA) is 2.04 A?
17. 17.True or false: the voltmeter measures current. (a) False (b) True
18. 18.True or false: resistance is measured in ohms (Ω). (a) True (b) False
19. 19.📏 How many kilo-ohms (kΩ) is 200 Ω? =
20. 20.📏 How many ohms (Ω) is 6.9 kΩ?
21. 21.Which of these is measured in volts (V)? (a) power (b) the push of a cell (c) current (d) resistance
22. 22.📏 Which unit measures voltage? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
23. 23.True or false: current is measured in amperes (A). (a) False (b) True
24. 24.📏 How many kilowatts (kW) is 2750 W? =
25. 25.True or false: the voltmeter is joined across a part. (a) False (b) True
26. 26.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 100 (c) 1024 (d) 1000
27. 27.True or false: the flow of charge is measured in volts (V). (a) True (b) False
28. 28.True or false: resistance is measured in amperes (A). (a) True (b) False
29. 29.Which of these is measured in volts (V)? (a) current (b) voltage (c) resistance (d) energy used each second
30. 30.📏 How many milliamperes (mA) is 2.56 A?
31. 31.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
32. 32.True or false: the ammeter is joined in series. (a) True (b) False
33. 33.📏 How many amperes (A) is 1990 mA? =
34. 34.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
35. 35.📏 Which unit measures the flow of charge? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
36. 36.📏 How many watts (W) is 2.4 kW?
37. 37.True or false: the voltmeter measures voltage. (a) True (b) False
38. 38.True or false: power is measured in ohms (Ω). (a) True (b) False
39. 39.📏 How many watts (W) is 2.2 kW?
40. 40.📏 How many milliamperes (mA) is 2.91 A?

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