Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 648 · 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) 60 (b) 10 (c) 1000 (d) 100
2. 2.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
3. 3.True or false: resistance is measured in ohms (Ω). (a) False (b) True
4. 4.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
5. 5.Which of these is measured in watts (W)? (a) how much a part resists (b) energy used each second (c) the flow of charge (d) the push of a cell
6. 6.📏 How many amperes (A) is 50 mA? =
7. 7.📏 How many kilowatts (kW) is 1550 W? =
8. 8.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a narrow pipe (c) the flow of water (d) a bigger tank
9. 9.📏 How many milliamperes (mA) is 0.03 A?
10. 10.📏 Which unit measures power? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
11. 11.Which of these is measured in amperes (A)? (a) how much a part resists (b) energy used each second (c) the push of a cell (d) the flow of charge
12. 12.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
13. 13.📏 How many watts (W) is 3 kW?
14. 14.True or false: the voltmeter measures voltage. (a) True (b) False
15. 15.Which of these is measured in volts (V)? (a) power (b) voltage (c) the flow of charge (d) resistance
16. 16.📏 How many kilowatts (kW) is 1600 W? =
17. 17.📏 How many kilo-ohms (kΩ) is 4600 Ω? =
18. 18.Which of these is measured in ohms (Ω)? (a) energy used each second (b) resistance (c) voltage (d) power
19. 19.📏 How many ohms (Ω) is 5.2 kΩ?
20. 20.📏 How many kilo-ohms (kΩ) is 6300 Ω? =
21. 21.📏 How many kilo-ohms (kΩ) is 6200 Ω? =
22. 22.True or false: the voltmeter is joined in series. (a) True (b) False
23. 23.True or false: the ammeter measures voltage. (a) True (b) False
24. 24.True or false: the ammeter is joined across a part. (a) False (b) True
25. 25.True or false: the flow of charge is measured in watts (W). (a) True (b) False
26. 26.📏 Which unit measures voltage? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
27. 27.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
28. 28.True or false: current is measured in watts (W). (a) True (b) False
29. 29.📏 How many kilo-ohms (kΩ) is 3300 Ω? =
30. 30.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
31. 31.True or false: the push of a cell is measured in volts (V). (a) False (b) True
32. 32.📏 Which unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
33. 33.📏 How many milliamperes (mA) is 2.57 A?
34. 34.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
35. 35.True or false: the voltmeter measures current. (a) False (b) True
36. 36.Which of these is measured in volts (V)? (a) how much a part resists (b) the flow of charge (c) the push of a cell (d) current
37. 37.📏 How many kilowatts (kW) is 450 W? =
38. 38.📏 How many watts (W) is 1.1 kW?
39. 39.Which of these is measured in amperes (A)? (a) voltage (b) current (c) the push of a cell (d) resistance
40. 40.📏 How many milliamperes (mA) is 0.96 A?

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