Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 73 · 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 amperes (A) is 190 mA? =
2. 2.True or false: the flow of charge is measured in volts (V). (a) False (b) True
3. 3.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
4. 4.True or false: the ammeter is joined in series. (a) True (b) False
5. 5.📏 Which unit measures voltage? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
6. 6.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
7. 7.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 1000 (d) 60
8. 8.📏 How many milliamperes (mA) is 0.37 A?
9. 9.True or false: the voltmeter is joined in series. (a) True (b) False
10. 10.📏 How many ohms (Ω) is 4.6 kΩ?
11. 11.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
12. 12.📏 How many kilowatts (kW) is 2100 W? =
13. 13.True or false: the ammeter measures voltage. (a) True (b) False
14. 14.📏 How many ohms (Ω) is 9.2 kΩ?
15. 15.📏 How many kilo-ohms (kΩ) is 2800 Ω? =
16. 16.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the flow of water (c) the water pressure (d) a narrow pipe
17. 17.True or false: the voltmeter measures current. (a) False (b) True
18. 18.True or false: the ammeter is joined across a part. (a) False (b) True
19. 19.📏 Which unit measures power? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
20. 20.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the pipe colour (c) the water pressure (d) the flow of water
21. 21.Which of these is measured in ohms (Ω)? (a) voltage (b) power (c) current (d) resistance
22. 22.True or false: the voltmeter measures voltage. (a) False (b) True
23. 23.📏 Which unit measures resistance? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
24. 24.📏 How many amperes (A) is 780 mA? =
25. 25.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
26. 26.True or false: power is measured in volts (V). (a) True (b) False
27. 27.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
28. 28.📏 How many kilowatts (kW) is 2600 W? =
29. 29.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
30. 30.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 10 (c) 1000 (d) 100
31. 31.📏 How many watts (W) is 4.8 kW?
32. 32.Which of these is measured in amperes (A)? (a) energy used each second (b) power (c) current (d) how much a part resists
33. 33.Which of these is measured in volts (V)? (a) the flow of charge (b) how much a part resists (c) voltage (d) current
34. 34.📏 How many milliamperes (mA) is 0.24 A?
35. 35.Which of these is measured in volts (V)? (a) energy used each second (b) resistance (c) the push of a cell (d) power
36. 36.True or false: power is measured in amperes (A). (a) False (b) True
37. 37.📏 How many watts (W) is 2.7 kW?
38. 38.📏 How many kilo-ohms (kΩ) is 4300 Ω? =
39. 39.Which of these is measured in ohms (Ω)? (a) current (b) the flow of charge (c) the push of a cell (d) how much a part resists
40. 40.📏 How many watts (W) is 2.4 kW?

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