Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 765 · 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.True or false: current is measured in volts (V). (a) True (b) False
3. 3.True or false: energy used each second is measured in amperes (A). (a) True (b) False
4. 4.Which of these is measured in amperes (A)? (a) the push of a cell (b) the flow of charge (c) energy used each second (d) voltage
5. 5.📏 How many ohms (Ω) is 3.2 kΩ?
6. 6.📏 How many ohms (Ω) is 0.8 kΩ?
7. 7.Which of these is measured in watts (W)? (a) how much a part resists (b) voltage (c) energy used each second (d) the push of a cell
8. 8.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
9. 9.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the pipe colour (c) the flow of water (d) the water pressure
10. 10.📏 How many ohms (Ω) is 0.9 kΩ?
11. 11.Which of these is measured in watts (W)? (a) power (b) the flow of charge (c) current (d) voltage
12. 12.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) how much a part resists (c) energy used each second (d) power
13. 13.📏 How many milliamperes (mA) is 1.17 A?
14. 14.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
15. 15.📏 How many ohms (Ω) is 9 kΩ?
16. 16.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
17. 17.Which of these is measured in volts (V)? (a) the flow of charge (b) current (c) voltage (d) energy used each second
18. 18.📏 How many kilowatts (kW) is 1750 W? =
19. 19.📏 How many watts (W) is 1.3 kW?
20. 20.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the water pressure (d) the pipe colour
21. 21.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1024 (d) 1000
22. 22.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) voltage (c) power (d) resistance
23. 23.True or false: the voltmeter measures current. (a) True (b) False
24. 24.📏 Which unit measures resistance? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
25. 25.True or false: the ammeter is joined in series. (a) True (b) False
26. 26.📏 How many watts (W) is 0.3 kW?
27. 27.📏 How many ohms (Ω) is 6.8 kΩ?
28. 28.True or false: resistance is measured in ohms (Ω). (a) True (b) False
29. 29.True or false: the voltmeter is joined in series. (a) True (b) False
30. 30.True or false: the ammeter measures voltage. (a) True (b) False
31. 31.True or false: current is measured in watts (W). (a) False (b) True
32. 32.📏 How many amperes (A) is 2630 mA? =
33. 33.📏 How many kilo-ohms (kΩ) is 1700 Ω? =
34. 34.📏 Which unit measures energy used each second? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
35. 35.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the water pressure (c) the flow of water (d) a bigger tank
36. 36.📏 How many kilowatts (kW) is 400 W? =
37. 37.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 1000 (d) 100
38. 38.📏 How many amperes (A) is 2250 mA? =
39. 39.📏 How many kilowatts (kW) is 250 W? =
40. 40.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter

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