Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 838 · 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.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 100 (c) 60 (d) 10
2. 2.Which of these is measured in watts (W)? (a) power (b) resistance (c) current (d) the flow of charge
3. 3.Which of these is measured in watts (W)? (a) resistance (b) the flow of charge (c) the push of a cell (d) energy used each second
4. 4.📏 How many amperes (A) is 1440 mA? =
5. 5.📏 Which unit measures the flow of charge? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
6. 6.True or false: the ammeter is joined in series. (a) True (b) False
7. 7.📏 Which unit measures resistance? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
8. 8.True or false: power is measured in amperes (A). (a) True (b) False
9. 9.True or false: voltage is measured in amperes (A). (a) True (b) False
10. 10.True or false: the voltmeter is joined in series. (a) True (b) False
11. 11.Which of these is measured in amperes (A)? (a) how much a part resists (b) the push of a cell (c) the flow of charge (d) voltage
12. 12.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) a bigger tank (c) the water pressure (d) the flow of water
13. 13.True or false: the ammeter measures voltage. (a) False (b) True
14. 14.📏 Which unit measures the push of a cell? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
15. 15.True or false: the voltmeter measures current. (a) True (b) False
16. 16.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
17. 17.Which of these is measured in volts (V)? (a) voltage (b) power (c) how much a part resists (d) the flow of charge
18. 18.True or false: the push of a cell is measured in volts (V). (a) True (b) False
19. 19.📏 How many ohms (Ω) is 2.1 kΩ?
20. 20.True or false: current is measured in watts (W). (a) False (b) True
21. 21.📏 How many amperes (A) is 1500 mA? =
22. 22.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
23. 23.Which of these is measured in amperes (A)? (a) resistance (b) how much a part resists (c) the push of a cell (d) current
24. 24.📏 How many watts (W) is 1.5 kW?
25. 25.📏 Which unit measures voltage? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
26. 26.Which of these is measured in ohms (Ω)? (a) voltage (b) power (c) the push of a cell (d) how much a part resists
27. 27.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
28. 28.📏 How many amperes (A) is 400 mA? =
29. 29.True or false: the ammeter measures current. (a) True (b) False
30. 30.📏 Which unit measures power? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
31. 31.📏 How many watts (W) is 1.3 kW?
32. 32.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
33. 33.📏 How many milliamperes (mA) is 0.49 A?
34. 34.📏 Which unit measures how much a part resists? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
35. 35.📏 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
36. 36.True or false: energy used each second is measured in watts (W). (a) True (b) False
37. 37.📏 How many kilo-ohms (kΩ) is 6300 Ω? =
38. 38.📏 How many milliamperes (mA) is 0.31 A?
39. 39.📏 How many kilowatts (kW) is 800 W? =
40. 40.True or false: current is measured in amperes (A). (a) False (b) True

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