Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 832 · 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) the water pressure (c) the pipe colour (d) a narrow pipe
2. 2.Which of these is measured in watts (W)? (a) the push of a cell (b) current (c) energy used each second (d) voltage
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) resistance (b) the flow of charge (c) power (d) current
5. 5.📏 How many milliamperes (mA) is 0.63 A?
6. 6.True or false: current is measured in watts (W). (a) True (b) False
7. 7.📏 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
8. 8.True or false: the ammeter is joined across a part. (a) True (b) False
9. 9.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 1000 (c) 10 (d) 100
10. 10.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
11. 11.True or false: the voltmeter measures current. (a) True (b) False
12. 12.True or false: the voltmeter is joined in series. (a) True (b) False
13. 13.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 100 (c) 1024 (d) 1000
14. 14.📏 Which unit measures the push of a cell? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
15. 15.📏 Which unit measures voltage? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
16. 16.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a bigger tank (c) a narrow pipe (d) the water pressure
17. 17.Which of these is measured in amperes (A)? (a) voltage (b) current (c) resistance (d) how much a part resists
18. 18.Which of these is measured in volts (V)? (a) the push of a cell (b) energy used each second (c) current (d) resistance
19. 19.📏 Which unit measures power? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
20. 20.📏 How many kilo-ohms (kΩ) is 1200 Ω? =
21. 21.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
22. 22.📏 How many watts (W) is 4.2 kW?
23. 23.📏 Which unit measures resistance? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
24. 24.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
25. 25.True or false: the voltmeter measures voltage. (a) False (b) True
26. 26.📏 How many watts (W) is 4.5 kW?
27. 27.📏 How many milliamperes (mA) is 1.18 A?
28. 28.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
29. 29.True or false: voltage is measured in amperes (A). (a) False (b) True
30. 30.Which of these is measured in ohms (Ω)? (a) energy used each second (b) the push of a cell (c) how much a part resists (d) the flow of charge
31. 31.Which of these is measured in volts (V)? (a) current (b) the flow of charge (c) voltage (d) how much a part resists
32. 32.True or false: power is measured in watts (W). (a) True (b) False
33. 33.📏 How many amperes (A) is 920 mA? =
34. 34.📏 How many amperes (A) is 730 mA? =
35. 35.True or false: the voltmeter is joined across a part. (a) True (b) False
36. 36.📏 How many ohms (Ω) is 5.3 kΩ?
37. 37.Which of these is measured in ohms (Ω)? (a) resistance (b) voltage (c) the push of a cell (d) current
38. 38.True or false: the ammeter measures voltage. (a) False (b) True
39. 39.📏 How many amperes (A) is 2330 mA? =
40. 40.📏 Which unit measures current? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)

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