Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 371 · 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 ohms (Ω)? (a) current (b) power (c) voltage (d) how much a part resists
2. 2.True or false: the ammeter is joined across a part. (a) False (b) True
3. 3.📏 How many milliamperes (mA) is 1.91 A?
4. 4.Which of these is measured in watts (W)? (a) power (b) the flow of charge (c) resistance (d) the push of a cell
5. 5.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the tap handle (c) the water pressure (d) the pipe colour
6. 6.True or false: the voltmeter measures current. (a) True (b) False
7. 7.📏 Which unit measures resistance? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
8. 8.📏 How many kilowatts (kW) is 1650 W? =
9. 9.📏 Which unit measures power? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
10. 10.📏 How many amperes (A) is 140 mA? =
11. 11.📏 How many milliamperes (mA) is 0.08 A?
12. 12.📏 How many kilowatts (kW) is 4350 W? =
13. 13.True or false: current is measured in watts (W). (a) True (b) False
14. 14.Which of these is measured in ohms (Ω)? (a) energy used each second (b) current (c) resistance (d) the push of a cell
15. 15.📏 Which unit measures voltage? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
16. 16.📏 Which unit measures how much a part resists? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
17. 17.Which of these is measured in amperes (A)? (a) resistance (b) the push of a cell (c) current (d) how much a part resists
18. 18.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
19. 19.True or false: resistance is measured in ohms (Ω). (a) True (b) False
20. 20.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
21. 21.📏 How many amperes (A) is 2300 mA? =
22. 22.📏 How many amperes (A) is 270 mA? =
23. 23.True or false: the voltmeter measures voltage. (a) True (b) False
24. 24.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
25. 25.📏 How many amperes (A) is 130 mA? =
26. 26.📏 How many kilowatts (kW) is 3250 W? =
27. 27.📏 How many kilo-ohms (kΩ) is 6600 Ω? =
28. 28.Which of these is measured in amperes (A)? (a) voltage (b) power (c) the flow of charge (d) the push of a cell
29. 29.True or false: voltage is measured in volts (V). (a) False (b) True
30. 30.Which of these is measured in watts (W)? (a) the push of a cell (b) current (c) energy used each second (d) resistance
31. 31.True or false: current is measured in ohms (Ω). (a) True (b) False
32. 32.📏 How many kilowatts (kW) is 4900 W? =
33. 33.📏 How many kilowatts (kW) is 1350 W? =
34. 34.True or false: the ammeter is joined in series. (a) False (b) True
35. 35.📏 How many kilo-ohms (kΩ) is 1800 Ω? =
36. 36.Which of these is measured in volts (V)? (a) current (b) energy used each second (c) how much a part resists (d) the push of a cell
37. 37.True or false: voltage is measured in ohms (Ω). (a) True (b) False
38. 38.📏 Which unit measures the push of a cell? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
39. 39.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 1000 (d) 60
40. 40.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter

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