Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 312 · 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.True or false: energy used each second is measured in volts (V). (a) True (b) False
2. 2.True or false: the ammeter measures current. (a) False (b) True
3. 3.📏 How many milliamperes (mA) is 1.39 A?
4. 4.Which of these is measured in watts (W)? (a) the flow of charge (b) voltage (c) power (d) how much a part resists
5. 5.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
6. 6.📏 How many kilowatts (kW) is 1650 W? =
7. 7.📏 How many amperes (A) is 1230 mA? =
8. 8.📏 Which unit measures the push of a cell? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
9. 9.True or false: voltage is measured in volts (V). (a) True (b) False
10. 10.Which of these is measured in volts (V)? (a) energy used each second (b) the flow of charge (c) how much a part resists (d) voltage
11. 11.True or false: the push of a cell is measured in volts (V). (a) True (b) False
12. 12.True or false: the voltmeter measures voltage. (a) True (b) False
13. 13.True or false: the voltmeter is joined across a part. (a) False (b) True
14. 14.True or false: resistance is measured in ohms (Ω). (a) False (b) True
15. 15.📏 How many kilowatts (kW) is 950 W? =
16. 16.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
17. 17.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the pipe colour (d) the water pressure
18. 18.📏 How many ohms (Ω) is 2.8 kΩ?
19. 19.True or false: the voltmeter is joined in series. (a) True (b) False
20. 20.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) the water pressure (c) a narrow pipe (d) a bigger tank
21. 21.Which of these is measured in watts (W)? (a) energy used each second (b) current (c) the flow of charge (d) voltage
22. 22.True or false: the ammeter is joined across a part. (a) False (b) True
23. 23.True or false: power is measured in watts (W). (a) True (b) False
24. 24.📏 How many ohms (Ω) is 6.9 kΩ?
25. 25.True or false: resistance is measured in amperes (A). (a) True (b) False
26. 26.📏 How many amperes (A) is 20 mA? =
27. 27.Which of these is measured in amperes (A)? (a) power (b) voltage (c) current (d) how much a part resists
28. 28.📏 Which unit measures power? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
29. 29.📏 How many kilowatts (kW) is 1100 W? =
30. 30.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
31. 31.True or false: energy used each second is measured in amperes (A). (a) True (b) False
32. 32.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
33. 33.📏 How many watts (W) is 2.6 kW?
34. 34.📏 How many amperes (A) is 430 mA? =
35. 35.Which of these is measured in ohms (Ω)? (a) voltage (b) the push of a cell (c) resistance (d) current
36. 36.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 100 (d) 1000
37. 37.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
38. 38.📏 How many milliamperes (mA) is 0.31 A?
39. 39.Which of these is measured in ohms (Ω)? (a) power (b) current (c) how much a part resists (d) voltage
40. 40.📏 How many kilo-ohms (kΩ) is 2400 Ω? =

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