Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 337 · 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 unit measures power? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
2. 2.True or false: the voltmeter measures voltage. (a) False (b) True
3. 3.📏 How many kilo-ohms (kΩ) is 1100 Ω? =
4. 4.True or false: the voltmeter is joined across a part. (a) True (b) False
5. 5.True or false: the voltmeter is joined in series. (a) False (b) True
6. 6.📏 Which unit measures voltage? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
7. 7.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
8. 8.📏 How many kilowatts (kW) is 700 W? =
9. 9.True or false: current is measured in amperes (A). (a) False (b) True
10. 10.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
11. 11.Which of these is measured in watts (W)? (a) power (b) the push of a cell (c) the flow of charge (d) voltage
12. 12.True or false: voltage is measured in volts (V). (a) False (b) True
13. 13.📏 How many watts (W) is 2.8 kW?
14. 14.📏 How many milliamperes (mA) is 0.42 A?
15. 15.True or false: the ammeter measures current. (a) True (b) False
16. 16.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
17. 17.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
18. 18.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 60 (c) 10 (d) 1000
19. 19.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the water pressure (c) a narrow pipe (d) the flow of water
20. 20.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
21. 21.📏 How many amperes (A) is 730 mA? =
22. 22.True or false: the ammeter is joined across a part. (a) False (b) True
23. 23.📏 How many kilo-ohms (kΩ) is 4200 Ω? =
24. 24.📏 How many kilowatts (kW) is 1100 W? =
25. 25.True or false: the push of a cell is measured in volts (V). (a) False (b) True
26. 26.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) energy used each second (c) how much a part resists (d) power
27. 27.Which of these is measured in amperes (A)? (a) power (b) energy used each second (c) how much a part resists (d) the flow of charge
28. 28.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
29. 29.True or false: resistance is measured in ohms (Ω). (a) True (b) False
30. 30.📏 How many watts (W) is 2.4 kW?
31. 31.Which of these is measured in volts (V)? (a) voltage (b) the flow of charge (c) resistance (d) how much a part resists
32. 32.True or false: the ammeter measures voltage. (a) False (b) True
33. 33.True or false: the push of a cell is measured in amperes (A). (a) False (b) True
34. 34.📏 How many milliamperes (mA) is 0.14 A?
35. 35.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
36. 36.Which of these is measured in amperes (A)? (a) voltage (b) current (c) the push of a cell (d) power
37. 37.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 1000 (c) 100 (d) 10
38. 38.📏 How many kilo-ohms (kΩ) is 2000 Ω? =
39. 39.Which of these is measured in watts (W)? (a) energy used each second (b) the flow of charge (c) the push of a cell (d) current
40. 40.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the water pressure (c) the flow of water (d) the pipe colour

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