Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 766 · 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: the ammeter is joined across a part. (a) False (b) True
2. 2.📏 How many kilo-ohms (kΩ) is 2600 Ω? =
3. 3.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
4. 4.True or false: the push of a cell is measured in volts (V). (a) True (b) False
5. 5.Which of these is measured in watts (W)? (a) energy used each second (b) voltage (c) current (d) how much a part resists
6. 6.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
7. 7.📏 Which unit measures the flow of charge? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
8. 8.True or false: the voltmeter measures current. (a) True (b) False
9. 9.📏 How many watts (W) is 0.4 kW?
10. 10.📏 How many amperes (A) is 650 mA? =
11. 11.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 1000 (c) 10 (d) 100
12. 12.📏 How many amperes (A) is 2640 mA? =
13. 13.True or false: resistance is measured in ohms (Ω). (a) False (b) True
14. 14.📏 How many amperes (A) is 2540 mA? =
15. 15.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a bigger tank (c) a narrow pipe (d) the flow of water
16. 16.Which of these is measured in amperes (A)? (a) the push of a cell (b) voltage (c) how much a part resists (d) current
17. 17.📏 How many watts (W) is 2 kW?
18. 18.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
19. 19.Which of these is measured in watts (W)? (a) the push of a cell (b) current (c) power (d) how much a part resists
20. 20.📏 Which unit measures the push of a cell? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
21. 21.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1000 (d) 1024
22. 22.True or false: energy used each second is measured in watts (W). (a) False (b) True
23. 23.True or false: power is measured in amperes (A). (a) True (b) False
24. 24.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) energy used each second (c) current (d) resistance
25. 25.📏 How many kilo-ohms (kΩ) is 2300 Ω? =
26. 26.True or false: voltage is measured in volts (V). (a) True (b) False
27. 27.📏 Which unit measures current? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
28. 28.True or false: power is measured in watts (W). (a) False (b) True
29. 29.Which of these is measured in volts (V)? (a) current (b) voltage (c) how much a part resists (d) the flow of charge
30. 30.True or false: the voltmeter measures voltage. (a) False (b) True
31. 31.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
32. 32.📏 How many kilo-ohms (kΩ) is 4200 Ω? =
33. 33.True or false: resistance is measured in volts (V). (a) False (b) True
34. 34.📏 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
35. 35.📏 How many amperes (A) is 2420 mA? =
36. 36.📏 How many kilo-ohms (kΩ) is 900 Ω? =
37. 37.True or false: how much a part resists is measured in volts (V). (a) True (b) False
38. 38.📏 How many watts (W) is 1.5 kW?
39. 39.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
40. 40.📏 How many ohms (Ω) is 7.1 kΩ?

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