Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 757 · 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 push of a cell is measured in amperes (A). (a) True (b) False
2. 2.📏 How many watts (W) is 1 kW?
3. 3.True or false: the push of a cell is measured in volts (V). (a) False (b) True
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 voltage? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
6. 6.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) current (c) resistance (d) power
7. 7.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) the push of a cell (c) current (d) power
8. 8.📏 How many milliamperes (mA) is 1.35 A?
9. 9.📏 Which unit measures energy used each second? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
10. 10.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 10 (d) 1000
11. 11.Which of these is measured in volts (V)? (a) how much a part resists (b) the push of a cell (c) power (d) resistance
12. 12.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
13. 13.📏 Which unit measures current? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
14. 14.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the pipe colour (c) a narrow pipe (d) the flow of water
15. 15.True or false: the ammeter is joined across a part. (a) False (b) True
16. 16.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
17. 17.📏 How many amperes (A) is 2350 mA? =
18. 18.True or false: resistance is measured in ohms (Ω). (a) False (b) True
19. 19.Which of these is measured in watts (W)? (a) the push of a cell (b) energy used each second (c) voltage (d) resistance
20. 20.Which of these is measured in watts (W)? (a) resistance (b) how much a part resists (c) current (d) power
21. 21.📏 How many milliamperes (mA) is 0.35 A?
22. 22.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) a narrow pipe (c) the flow of water (d) the water pressure
23. 23.📏 How many milliamperes (mA) is 0.79 A?
24. 24.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
25. 25.📏 How many watts (W) is 4.1 kW?
26. 26.📏 How many amperes (A) is 50 mA? =
27. 27.📏 How many watts (W) is 5 kW?
28. 28.📏 Which unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
29. 29.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
30. 30.Which of these is measured in volts (V)? (a) how much a part resists (b) the flow of charge (c) power (d) voltage
31. 31.True or false: the ammeter measures voltage. (a) True (b) False
32. 32.True or false: current is measured in volts (V). (a) False (b) True
33. 33.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
34. 34.📏 How many amperes (A) is 2190 mA? =
35. 35.📏 How many ohms (Ω) is 8.3 kΩ?
36. 36.True or false: how much a part resists is measured in watts (W). (a) True (b) False
37. 37.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 60 (d) 1000
38. 38.📏 How many kilowatts (kW) is 3700 W? =
39. 39.True or false: the voltmeter is joined in series. (a) False (b) True
40. 40.📏 Which unit measures power? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)

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