Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 107 · 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.True or false: current is measured in amperes (A). (a) True (b) False
2. 2.True or false: power is measured in amperes (A). (a) False (b) True
3. 3.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
4. 4.True or false: the voltmeter measures current. (a) True (b) False
5. 5.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
6. 6.Which of these is measured in amperes (A)? (a) how much a part resists (b) the push of a cell (c) current (d) power
7. 7.📏 How many kilowatts (kW) is 900 W? =
8. 8.📏 How many milliamperes (mA) is 1.85 A?
9. 9.True or false: the ammeter measures current. (a) True (b) False
10. 10.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the flow of water (c) the water pressure (d) a bigger tank
11. 11.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
12. 12.True or false: the ammeter is joined in series. (a) True (b) False
13. 13.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water pressure (c) the tap handle (d) the water tank lid
14. 14.📏 How many amperes (A) is 1110 mA? =
15. 15.📏 How many watts (W) is 0.3 kW?
16. 16.True or false: the push of a cell is measured in volts (V). (a) False (b) True
17. 17.📏 How many watts (W) is 1.2 kW?
18. 18.📏 How many amperes (A) is 2830 mA? =
19. 19.📏 How many kilo-ohms (kΩ) is 2600 Ω? =
20. 20.📏 How many kilowatts (kW) is 600 W? =
21. 21.📏 How many ohms (Ω) is 5.5 kΩ?
22. 22.True or false: the ammeter is joined across a part. (a) True (b) False
23. 23.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
24. 24.📏 How many kilo-ohms (kΩ) is 7500 Ω? =
25. 25.📏 How many amperes (A) is 400 mA? =
26. 26.Which of these is measured in watts (W)? (a) energy used each second (b) resistance (c) how much a part resists (d) voltage
27. 27.📏 Which unit measures voltage? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
28. 28.True or false: the push of a cell is measured in watts (W). (a) False (b) True
29. 29.📏 How many milliamperes (mA) is 2.65 A?
30. 30.Which of these is measured in ohms (Ω)? (a) energy used each second (b) power (c) voltage (d) how much a part resists
31. 31.📏 How many kilowatts (kW) is 4500 W? =
32. 32.📏 How many amperes (A) is 2310 mA? =
33. 33.True or false: the voltmeter measures voltage. (a) False (b) True
34. 34.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the pipe colour (c) a narrow pipe (d) the water pressure
35. 35.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
36. 36.True or false: how much a part resists is measured in volts (V). (a) False (b) True
37. 37.True or false: how much a part resists is measured in watts (W). (a) True (b) False
38. 38.📏 Which unit measures resistance? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
39. 39.Which of these is measured in ohms (Ω)? (a) power (b) resistance (c) energy used each second (d) the push of a cell
40. 40.True or false: the ammeter measures voltage. (a) False (b) True

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