Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 320 · 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 flow of charge is measured in volts (V). (a) True (b) False
2. 2.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
3. 3.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 1024 (c) 100 (d) 10
4. 4.📏 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
5. 5.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
6. 6.📏 How many amperes (A) is 320 mA? =
7. 7.📏 How many ohms (Ω) is 2.4 kΩ?
8. 8.True or false: power is measured in volts (V). (a) False (b) True
9. 9.Which of these is measured in volts (V)? (a) current (b) voltage (c) energy used each second (d) how much a part resists
10. 10.📏 How many milliamperes (mA) is 2 A?
11. 11.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
12. 12.True or false: the voltmeter measures current. (a) True (b) False
13. 13.True or false: the voltmeter is joined across a part. (a) False (b) True
14. 14.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
15. 15.True or false: energy used each second is measured in watts (W). (a) False (b) True
16. 16.📏 Which unit measures voltage? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
17. 17.📏 Which unit measures current? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
18. 18.Which of these is measured in amperes (A)? (a) resistance (b) energy used each second (c) voltage (d) the flow of charge
19. 19.Which of these is measured in watts (W)? (a) the push of a cell (b) resistance (c) the flow of charge (d) energy used each second
20. 20.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) a narrow pipe (c) the water pressure (d) the flow of water
21. 21.Which of these is measured in amperes (A)? (a) energy used each second (b) current (c) the push of a cell (d) how much a part resists
22. 22.Which of these is measured in watts (W)? (a) the flow of charge (b) power (c) current (d) the push of a cell
23. 23.📏 Which unit measures resistance? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
24. 24.📏 How many kilowatts (kW) is 350 W? =
25. 25.📏 How many ohms (Ω) is 7.3 kΩ?
26. 26.True or false: power is measured in amperes (A). (a) False (b) True
27. 27.True or false: energy used each second is measured in ohms (Ω). (a) False (b) True
28. 28.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
29. 29.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a narrow pipe (c) the water pressure (d) a bigger tank
30. 30.True or false: how much a part resists is measured in watts (W). (a) False (b) True
31. 31.📏 How many milliamperes (mA) is 2.38 A?
32. 32.📏 How many kilo-ohms (kΩ) is 6500 Ω? =
33. 33.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
34. 34.📏 How many milliamperes (mA) is 2.72 A?
35. 35.True or false: voltage is measured in volts (V). (a) False (b) True
36. 36.📏 How many ohms (Ω) is 0.9 kΩ?
37. 37.📏 Which unit measures the push of a cell? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
38. 38.📏 How many kilowatts (kW) is 1600 W? =
39. 39.True or false: the ammeter measures current. (a) True (b) False
40. 40.True or false: the ammeter is joined in series. (a) True (b) False

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