Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 392 · 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.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) a narrow pipe (c) the water pressure (d) the pipe colour
2. 2.📏 How many ohms (Ω) is 4.5 kΩ?
3. 3.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
4. 4.Which of these is measured in watts (W)? (a) power (b) current (c) the push of a cell (d) voltage
5. 5.📏 How many kilowatts (kW) is 3200 W? =
6. 6.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
7. 7.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
8. 8.📏 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
9. 9.True or false: voltage is measured in volts (V). (a) True (b) False
10. 10.📏 Which unit measures the flow of charge? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
11. 11.True or false: the ammeter measures current. (a) False (b) True
12. 12.Which of these is measured in volts (V)? (a) how much a part resists (b) energy used each second (c) power (d) voltage
13. 13.True or false: power is measured in amperes (A). (a) False (b) True
14. 14.📏 How many watts (W) is 2.1 kW?
15. 15.Which of these is measured in watts (W)? (a) voltage (b) how much a part resists (c) energy used each second (d) current
16. 16.True or false: the push of a cell is measured in volts (V). (a) False (b) True
17. 17.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 10 (c) 100 (d) 1024
18. 18.True or false: current is measured in watts (W). (a) True (b) False
19. 19.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) energy used each second (c) the flow of charge (d) how much a part resists
20. 20.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) the water pressure (c) a bigger tank (d) a narrow pipe
21. 21.True or false: resistance is measured in ohms (Ω). (a) False (b) True
22. 22.True or false: the ammeter is joined in series. (a) True (b) False
23. 23.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) energy used each second (c) resistance (d) voltage
24. 24.True or false: the voltmeter measures current. (a) True (b) False
25. 25.Which of these is measured in amperes (A)? (a) current (b) voltage (c) energy used each second (d) how much a part resists
26. 26.📏 How many milliamperes (mA) is 2.28 A?
27. 27.📏 How many milliamperes (mA) is 2.32 A?
28. 28.📏 Which unit measures resistance? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
29. 29.📏 How many amperes (A) is 2680 mA? =
30. 30.📏 How many amperes (A) is 890 mA? =
31. 31.True or false: resistance is measured in watts (W). (a) False (b) True
32. 32.📏 Which unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
33. 33.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
34. 34.📏 Which unit measures current? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
35. 35.True or false: energy used each second is measured in volts (V). (a) True (b) False
36. 36.True or false: voltage is measured in watts (W). (a) False (b) True
37. 37.📏 How many kilo-ohms (kΩ) is 6500 Ω? =
38. 38.📏 Which unit measures energy used each second? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
39. 39.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
40. 40.📏 How many amperes (A) is 750 mA? =

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