Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 627 · 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 flow of charge? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
2. 2.📏 How many amperes (A) is 2350 mA? =
3. 3.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
4. 4.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
5. 5.📏 How many kilo-ohms (kΩ) is 6400 Ω? =
6. 6.📏 How many amperes (A) is 70 mA? =
7. 7.True or false: voltage is measured in ohms (Ω). (a) False (b) True
8. 8.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
9. 9.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
10. 10.True or false: current is measured in ohms (Ω). (a) True (b) False
11. 11.📏 How many ohms (Ω) is 8.6 kΩ?
12. 12.True or false: voltage is measured in volts (V). (a) False (b) True
13. 13.📏 Which unit measures voltage? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
14. 14.📏 Which unit measures current? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
15. 15.📏 How many milliamperes (mA) is 1.09 A?
16. 16.True or false: the voltmeter measures current. (a) False (b) True
17. 17.Which of these is measured in watts (W)? (a) the flow of charge (b) resistance (c) power (d) how much a part resists
18. 18.True or false: resistance is measured in ohms (Ω). (a) True (b) False
19. 19.📏 How many amperes (A) is 2990 mA? =
20. 20.📏 How many ohms (Ω) is 3.6 kΩ?
21. 21.📏 How many kilowatts (kW) is 1100 W? =
22. 22.📏 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
23. 23.True or false: the flow of charge is measured in watts (W). (a) False (b) True
24. 24.📏 Which unit measures power? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
25. 25.True or false: the ammeter is joined across a part. (a) True (b) False
26. 26.Which of these is measured in amperes (A)? (a) voltage (b) power (c) resistance (d) the flow of charge
27. 27.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) a bigger tank (c) the water pressure (d) the flow of water
28. 28.Which of these is measured in watts (W)? (a) the flow of charge (b) how much a part resists (c) resistance (d) energy used each second
29. 29.📏 How many milliamperes (mA) is 1.56 A?
30. 30.📏 How many amperes (A) is 2510 mA? =
31. 31.📏 Which unit measures the push of a cell? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
32. 32.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
33. 33.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
34. 34.📏 How many kilo-ohms (kΩ) is 5000 Ω? =
35. 35.Which of these is measured in volts (V)? (a) energy used each second (b) how much a part resists (c) the flow of charge (d) voltage
36. 36.True or false: current is measured in watts (W). (a) True (b) False
37. 37.📏 How many milliamperes (mA) is 2.75 A?
38. 38.📏 Which unit measures how much a part resists? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
39. 39.📏 How many watts (W) is 2.4 kW?
40. 40.📏 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

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