Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 634 · 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: how much a part resists is measured in volts (V). (a) True (b) False
2. 2.📏 How many amperes (A) is 1770 mA? =
3. 3.📏 Which unit measures the flow of charge? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
4. 4.📏 How many amperes (A) is 990 mA? =
5. 5.True or false: the voltmeter measures voltage. (a) False (b) True
6. 6.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
7. 7.True or false: voltage is measured in watts (W). (a) True (b) False
8. 8.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
9. 9.📏 How many kilowatts (kW) is 100 W? =
10. 10.Which of these is measured in amperes (A)? (a) resistance (b) how much a part resists (c) current (d) power
11. 11.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the water pressure (c) a bigger tank (d) the flow of water
12. 12.📏 How many watts (W) is 1 kW?
13. 13.📏 Which unit measures the push of a cell? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
14. 14.📏 How many kilowatts (kW) is 2200 W? =
15. 15.📏 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
16. 16.📏 How many watts (W) is 0.9 kW?
17. 17.True or false: the ammeter is joined across a part. (a) True (b) False
18. 18.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) the push of a cell (c) resistance (d) energy used each second
19. 19.📏 How many ohms (Ω) is 1 kΩ?
20. 20.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
21. 21.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
22. 22.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 60 (c) 100 (d) 1000
23. 23.True or false: the ammeter measures voltage. (a) True (b) False
24. 24.📏 How many milliamperes (mA) is 0.53 A?
25. 25.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
26. 26.Which of these is measured in amperes (A)? (a) voltage (b) energy used each second (c) the flow of charge (d) power
27. 27.Which of these is measured in volts (V)? (a) voltage (b) power (c) current (d) energy used each second
28. 28.📏 How many ohms (Ω) is 3.4 kΩ?
29. 29.📏 How many amperes (A) is 2220 mA? =
30. 30.Which of these is measured in watts (W)? (a) the push of a cell (b) the flow of charge (c) energy used each second (d) current
31. 31.📏 How many kilo-ohms (kΩ) is 2400 Ω? =
32. 32.📏 How many watts (W) is 1.5 kW?
33. 33.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the tap handle (c) the water tank lid (d) the water pressure
34. 34.📏 How many amperes (A) is 800 mA? =
35. 35.📏 How many ohms (Ω) is 0.5 kΩ?
36. 36.📏 How many milliamperes (mA) is 1.89 A?
37. 37.📏 How many ohms (Ω) is 5 kΩ?
38. 38.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1000 (d) 1024
39. 39.📏 How many kilowatts (kW) is 1750 W? =
40. 40.True or false: how much a part resists is measured in watts (W). (a) False (b) True

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