Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 725 · 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 0.18 A?
2. 2.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) a narrow pipe (c) the pipe colour (d) the flow of water
3. 3.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
4. 4.📏 Which unit measures the push of a cell? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
5. 5.📏 How many kilo-ohms (kΩ) is 300 Ω? =
6. 6.📏 How many kilowatts (kW) is 1250 W? =
7. 7.True or false: resistance is measured in volts (V). (a) True (b) False
8. 8.📏 How many kilowatts (kW) is 850 W? =
9. 9.📏 Which unit measures resistance? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
10. 10.Which of these is measured in volts (V)? (a) the push of a cell (b) power (c) how much a part resists (d) resistance
11. 11.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
12. 12.📏 Which unit measures energy used each second? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
13. 13.True or false: the ammeter measures voltage. (a) True (b) False
14. 14.📏 Which unit measures power? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
15. 15.True or false: the ammeter measures current. (a) False (b) True
16. 16.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
17. 17.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water pressure (c) the pipe colour (d) the water tank lid
18. 18.📏 How many kilowatts (kW) is 4300 W? =
19. 19.📏 How many kilo-ohms (kΩ) is 1100 Ω? =
20. 20.True or false: the voltmeter is joined in series. (a) False (b) True
21. 21.📏 How many kilowatts (kW) is 500 W? =
22. 22.True or false: current is measured in amperes (A). (a) True (b) False
23. 23.Which of these is measured in watts (W)? (a) resistance (b) power (c) how much a part resists (d) the flow of charge
24. 24.📏 Which unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
25. 25.Which of these is measured in watts (W)? (a) the flow of charge (b) energy used each second (c) how much a part resists (d) the push of a cell
26. 26.True or false: the voltmeter measures voltage. (a) True (b) False
27. 27.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) power (c) voltage (d) how much a part resists
28. 28.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
29. 29.True or false: the ammeter is joined across a part. (a) False (b) True
30. 30.📏 Which unit measures the flow of charge? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
31. 31.📏 How many kilowatts (kW) is 1200 W? =
32. 32.📏 How many ohms (Ω) is 0.3 kΩ?
33. 33.📏 How many kilo-ohms (kΩ) is 1900 Ω? =
34. 34.True or false: energy used each second is measured in watts (W). (a) True (b) False
35. 35.True or false: voltage is measured in amperes (A). (a) False (b) True
36. 36.Which of these is measured in ohms (Ω)? (a) power (b) resistance (c) the push of a cell (d) energy used each second
37. 37.📏 How many milliamperes (mA) is 0.86 A?
38. 38.📏 How many amperes (A) is 1370 mA? =
39. 39.📏 How many amperes (A) is 1460 mA? =
40. 40.📏 How many milliamperes (mA) is 1.89 A?

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