Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 609 · 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.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
2. 2.Which of these is measured in volts (V)? (a) voltage (b) how much a part resists (c) resistance (d) current
3. 3.📏 Which unit measures power? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
4. 4.📏 How many kilo-ohms (kΩ) is 1300 Ω? =
5. 5.📏 How many ohms (Ω) is 3.5 kΩ?
6. 6.Which of these is measured in volts (V)? (a) the push of a cell (b) resistance (c) current (d) energy used each second
7. 7.Which of these is measured in amperes (A)? (a) voltage (b) power (c) current (d) energy used each second
8. 8.True or false: current is measured in amperes (A). (a) False (b) True
9. 9.True or false: the voltmeter measures current. (a) True (b) False
10. 10.True or false: the voltmeter is joined across a part. (a) True (b) False
11. 11.📏 Which unit measures resistance? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
12. 12.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
13. 13.📏 How many watts (W) is 4.7 kW?
14. 14.True or false: the voltmeter measures voltage. (a) True (b) False
15. 15.📏 How many milliamperes (mA) is 0.84 A?
16. 16.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 60 (c) 1000 (d) 10
17. 17.True or false: voltage is measured in ohms (Ω). (a) False (b) True
18. 18.📏 How many watts (W) is 3.8 kW?
19. 19.📏 How many ohms (Ω) is 10 kΩ?
20. 20.📏 How many watts (W) is 1.7 kW?
21. 21.Which of these is measured in ohms (Ω)? (a) voltage (b) current (c) the flow of charge (d) how much a part resists
22. 22.True or false: the ammeter measures current. (a) True (b) False
23. 23.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1000 (c) 1024 (d) 10
24. 24.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
25. 25.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) a narrow pipe (c) the flow of water (d) the water pressure
26. 26.📏 How many ohms (Ω) is 0.7 kΩ?
27. 27.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True
28. 28.📏 How many amperes (A) is 2480 mA? =
29. 29.Which of these is measured in amperes (A)? (a) the push of a cell (b) resistance (c) the flow of charge (d) power
30. 30.📏 How many milliamperes (mA) is 1.49 A?
31. 31.True or false: energy used each second is measured in amperes (A). (a) False (b) True
32. 32.True or false: the voltmeter is joined in series. (a) False (b) True
33. 33.📏 How many milliamperes (mA) is 1.96 A?
34. 34.📏 How many kilowatts (kW) is 1250 W? =
35. 35.📏 Which unit measures how much a part resists? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
36. 36.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the water pressure (c) a bigger tank (d) the flow of water
37. 37.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
38. 38.📏 How many kilo-ohms (kΩ) is 5600 Ω? =
39. 39.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
40. 40.📏 How many milliamperes (mA) is 2.59 A?

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