Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 276 · 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 amperes (A) is 660 mA? =
2. 2.📏 How many kilo-ohms (kΩ) is 3700 Ω? =
3. 3.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the water pressure (c) the tap handle (d) the pipe colour
4. 4.True or false: resistance is measured in ohms (Ω). (a) True (b) False
5. 5.True or false: the ammeter is joined across a part. (a) False (b) True
6. 6.Which of these is measured in watts (W)? (a) current (b) resistance (c) voltage (d) energy used each second
7. 7.Which of these is measured in volts (V)? (a) current (b) the push of a cell (c) the flow of charge (d) how much a part resists
8. 8.📏 How many watts (W) is 4.7 kW?
9. 9.Which of these is measured in ohms (Ω)? (a) current (b) voltage (c) resistance (d) the push of a cell
10. 10.Which of these is measured in amperes (A)? (a) the flow of charge (b) voltage (c) how much a part resists (d) energy used each second
11. 11.📏 How many amperes (A) is 690 mA? =
12. 12.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
13. 13.True or false: power is measured in volts (V). (a) False (b) True
14. 14.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
15. 15.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
16. 16.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
17. 17.📏 How many kilowatts (kW) is 1950 W? =
18. 18.True or false: the voltmeter measures current. (a) True (b) False
19. 19.True or false: energy used each second is measured in watts (W). (a) True (b) False
20. 20.📏 How many watts (W) is 1.8 kW?
21. 21.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1000 (c) 10 (d) 1024
22. 22.📏 How many watts (W) is 3.3 kW?
23. 23.📏 How many amperes (A) is 2270 mA? =
24. 24.Which of these is measured in amperes (A)? (a) power (b) current (c) how much a part resists (d) the push of a cell
25. 25.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
26. 26.📏 How many watts (W) is 0.7 kW?
27. 27.📏 How many kilowatts (kW) is 3100 W? =
28. 28.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the flow of water (c) a narrow pipe (d) the water pressure
29. 29.True or false: the ammeter measures voltage. (a) True (b) False
30. 30.📏 How many kilowatts (kW) is 2550 W? =
31. 31.True or false: current is measured in amperes (A). (a) False (b) True
32. 32.📏 How many watts (W) is 4.5 kW?
33. 33.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
34. 34.True or false: voltage is measured in volts (V). (a) False (b) True
35. 35.📏 How many milliamperes (mA) is 2.41 A?
36. 36.True or false: energy used each second is measured in ohms (Ω). (a) False (b) True
37. 37.📏 How many kilo-ohms (kΩ) is 9900 Ω? =
38. 38.📏 How many amperes (A) is 1450 mA? =
39. 39.📏 Which unit measures the push of a cell? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
40. 40.True or false: the voltmeter is joined in series. (a) True (b) False

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