Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 209 · 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.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) current (c) resistance (d) power
2. 2.True or false: the ammeter is joined across a part. (a) True (b) False
3. 3.📏 Which unit measures how much a part resists? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
4. 4.True or false: the voltmeter is joined across a part. (a) False (b) True
5. 5.📏 Which unit measures current? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
6. 6.True or false: the ammeter measures current. (a) True (b) False
7. 7.True or false: the flow of charge is measured in volts (V). (a) True (b) False
8. 8.📏 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
9. 9.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 10 (d) 1000
10. 10.📏 How many kilowatts (kW) is 800 W? =
11. 11.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
12. 12.📏 Which unit measures power? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
13. 13.True or false: the voltmeter measures voltage. (a) False (b) True
14. 14.📏 Which unit measures the flow of charge? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
15. 15.Which of these is measured in volts (V)? (a) current (b) energy used each second (c) the push of a cell (d) power
16. 16.True or false: the push of a cell is measured in watts (W). (a) True (b) False
17. 17.📏 How many ohms (Ω) is 4.4 kΩ?
18. 18.📏 How many kilowatts (kW) is 4000 W? =
19. 19.📏 How many kilo-ohms (kΩ) is 6700 Ω? =
20. 20.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
21. 21.📏 Which unit measures the push of a cell? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
22. 22.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
23. 23.Which of these is measured in amperes (A)? (a) how much a part resists (b) the push of a cell (c) resistance (d) the flow of charge
24. 24.📏 How many amperes (A) is 1700 mA? =
25. 25.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) the flow of water (c) a narrow pipe (d) a bigger tank
26. 26.True or false: how much a part resists is measured in amperes (A). (a) True (b) False
27. 27.📏 How many milliamperes (mA) is 0.38 A?
28. 28.📏 How many kilowatts (kW) is 1400 W? =
29. 29.📏 How many milliamperes (mA) is 1.23 A?
30. 30.Which of these is measured in watts (W)? (a) how much a part resists (b) the push of a cell (c) current (d) power
31. 31.📏 How many amperes (A) is 2420 mA? =
32. 32.True or false: the voltmeter is joined in series. (a) False (b) True
33. 33.📏 How many milliamperes (mA) is 0.12 A?
34. 34.True or false: current is measured in amperes (A). (a) True (b) False
35. 35.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 100 (c) 10 (d) 60
36. 36.📏 How many kilo-ohms (kΩ) is 9400 Ω? =
37. 37.📏 How many kilo-ohms (kΩ) is 300 Ω? =
38. 38.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
39. 39.📏 How many ohms (Ω) is 5 kΩ?
40. 40.True or false: how much a part resists is measured in volts (V). (a) False (b) True

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