Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 900 · 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.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
2. 2.Which of these is measured in volts (V)? (a) resistance (b) how much a part resists (c) the flow of charge (d) voltage
3. 3.True or false: the voltmeter measures voltage. (a) False (b) True
4. 4.📏 Which unit measures voltage? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
5. 5.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
6. 6.📏 Which unit measures how much a part resists? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
7. 7.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) a bigger tank (c) the flow of water (d) the water pressure
8. 8.Which of these is measured in volts (V)? (a) current (b) resistance (c) the push of a cell (d) power
9. 9.True or false: the push of a cell is measured in volts (V). (a) True (b) False
10. 10.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1000 (d) 1024
11. 11.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the water pressure (c) the pipe colour (d) the tap handle
12. 12.True or false: power is measured in amperes (A). (a) True (b) False
13. 13.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) resistance (c) the flow of charge (d) current
14. 14.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
15. 15.True or false: the voltmeter is joined across a part. (a) True (b) False
16. 16.Which of these is measured in amperes (A)? (a) resistance (b) voltage (c) the flow of charge (d) how much a part resists
17. 17.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the water pressure (c) the pipe colour (d) the flow of water
18. 18.True or false: energy used each second is measured in watts (W). (a) True (b) False
19. 19.Which of these is measured in watts (W)? (a) the push of a cell (b) power (c) the flow of charge (d) resistance
20. 20.📏 How many amperes (A) is 760 mA? =
21. 21.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 1000 (d) 100
22. 22.📏 How many milliamperes (mA) is 1.75 A?
23. 23.📏 How many watts (W) is 4.1 kW?
24. 24.📏 How many ohms (Ω) is 2.6 kΩ?
25. 25.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
26. 26.📏 Which unit measures resistance? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
27. 27.📏 How many kilowatts (kW) is 4800 W? =
28. 28.True or false: the voltmeter is joined in series. (a) True (b) False
29. 29.📏 How many ohms (Ω) is 4.2 kΩ?
30. 30.True or false: voltage is measured in volts (V). (a) True (b) False
31. 31.📏 How many watts (W) is 3 kW?
32. 32.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
33. 33.📏 Which unit measures the push of a cell? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
34. 34.📏 Which unit measures power? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
35. 35.True or false: current is measured in ohms (Ω). (a) False (b) True
36. 36.📏 How many ohms (Ω) is 4.6 kΩ?
37. 37.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
38. 38.Which of these is measured in ohms (Ω)? (a) energy used each second (b) how much a part resists (c) current (d) the flow of charge
39. 39.True or false: power is measured in ohms (Ω). (a) False (b) True
40. 40.📏 How many watts (W) is 4.3 kW?

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