Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 373 · 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.Which of these is measured in ohms (Ω)? (a) voltage (b) the flow of charge (c) how much a part resists (d) current
2. 2.📏 Which unit measures current? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
3. 3.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
4. 4.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the pipe colour (c) the tap handle (d) the water pressure
5. 5.📏 Which unit measures energy used each second? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
6. 6.Which of these is measured in watts (W)? (a) current (b) energy used each second (c) how much a part resists (d) the flow of charge
7. 7.True or false: how much a part resists is measured in watts (W). (a) True (b) False
8. 8.📏 How many milliamperes (mA) is 0.71 A?
9. 9.Which of these is measured in ohms (Ω)? (a) power (b) the push of a cell (c) resistance (d) the flow of charge
10. 10.Which of these is measured in amperes (A)? (a) current (b) power (c) the push of a cell (d) voltage
11. 11.Which of these is measured in volts (V)? (a) current (b) voltage (c) energy used each second (d) power
12. 12.📏 How many ohms (Ω) is 6.2 kΩ?
13. 13.📏 How many milliamperes (mA) is 0.45 A?
14. 14.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
15. 15.📏 How many kilo-ohms (kΩ) is 8300 Ω? =
16. 16.True or false: the ammeter is joined in series. (a) False (b) True
17. 17.📏 How many milliamperes (mA) is 1.16 A?
18. 18.Which of these is measured in watts (W)? (a) how much a part resists (b) the flow of charge (c) power (d) resistance
19. 19.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) a narrow pipe (d) the flow of water
20. 20.True or false: the voltmeter measures voltage. (a) False (b) True
21. 21.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 1000 (d) 10
22. 22.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True
23. 23.📏 Which unit measures power? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
24. 24.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 1000 (c) 10 (d) 100
25. 25.True or false: the ammeter measures current. (a) True (b) False
26. 26.True or false: energy used each second is measured in volts (V). (a) True (b) False
27. 27.True or false: the voltmeter is joined across a part. (a) True (b) False
28. 28.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
29. 29.True or false: current is measured in amperes (A). (a) True (b) False
30. 30.📏 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
31. 31.True or false: the ammeter measures voltage. (a) True (b) False
32. 32.📏 How many watts (W) is 0.2 kW?
33. 33.📏 How many kilowatts (kW) is 4850 W? =
34. 34.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
35. 35.📏 How many milliamperes (mA) is 0.56 A?
36. 36.True or false: the ammeter is joined across a part. (a) False (b) True
37. 37.📏 How many amperes (A) is 2330 mA? =
38. 38.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
39. 39.📏 How many milliamperes (mA) is 2.64 A?
40. 40.📏 How many amperes (A) is 240 mA? =

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