Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 269 · 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.📏 How many milliamperes (mA) is 2.42 A?
2. 2.Which of these is measured in amperes (A)? (a) the flow of charge (b) energy used each second (c) how much a part resists (d) voltage
3. 3.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 1000 (c) 10 (d) 100
4. 4.True or false: voltage is measured in ohms (Ω). (a) True (b) False
5. 5.True or false: the voltmeter measures current. (a) False (b) True
6. 6.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the water pressure (c) a bigger tank (d) the flow of water
7. 7.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
8. 8.📏 How many kilowatts (kW) is 3500 W? =
9. 9.📏 Which unit measures energy used each second? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
10. 10.True or false: the ammeter is joined across a part. (a) False (b) True
11. 11.📏 Which unit measures voltage? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
12. 12.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
13. 13.📏 Which unit measures the push of a cell? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
14. 14.True or false: current is measured in watts (W). (a) False (b) True
15. 15.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
16. 16.Which of these is measured in volts (V)? (a) the flow of charge (b) voltage (c) how much a part resists (d) resistance
17. 17.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 1000 (c) 60 (d) 10
18. 18.True or false: the ammeter measures voltage. (a) False (b) True
19. 19.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the water pressure (d) the pipe colour
20. 20.True or false: energy used each second is measured in volts (V). (a) False (b) True
21. 21.True or false: the voltmeter is joined across a part. (a) False (b) True
22. 22.True or false: the ammeter is joined in series. (a) True (b) False
23. 23.📏 How many amperes (A) is 1970 mA? =
24. 24.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
25. 25.📏 Which unit measures how much a part resists? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
26. 26.Which of these is measured in ohms (Ω)? (a) power (b) the push of a cell (c) current (d) how much a part resists
27. 27.📏 How many amperes (A) is 720 mA? =
28. 28.📏 How many ohms (Ω) is 8.5 kΩ?
29. 29.📏 How many kilo-ohms (kΩ) is 6100 Ω? =
30. 30.📏 How many milliamperes (mA) is 2.58 A?
31. 31.Which of these is measured in watts (W)? (a) energy used each second (b) the push of a cell (c) the flow of charge (d) voltage
32. 32.True or false: resistance is measured in ohms (Ω). (a) False (b) True
33. 33.📏 Which unit measures current? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
34. 34.True or false: current is measured in amperes (A). (a) True (b) False
35. 35.📏 How many ohms (Ω) is 8.2 kΩ?
36. 36.📏 How many watts (W) is 3.8 kW?
37. 37.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the water pressure (c) the flow of water (d) the pipe colour
38. 38.📏 How many amperes (A) is 1270 mA? =
39. 39.📏 How many ohms (Ω) is 5 kΩ?
40. 40.📏 How many milliamperes (mA) is 1.95 A?

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