Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 538 · 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 volts (V)? (a) voltage (b) how much a part resists (c) the flow of charge (d) power
2. 2.📏 How many amperes (A) is 1440 mA? =
3. 3.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the pipe colour (c) the tap handle (d) the water tank lid
4. 4.True or false: the voltmeter measures voltage. (a) False (b) True
5. 5.📏 How many amperes (A) is 1810 mA? =
6. 6.📏 How many milliamperes (mA) is 2.62 A?
7. 7.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) energy used each second (c) how much a part resists (d) voltage
8. 8.True or false: the ammeter measures current. (a) True (b) False
9. 9.📏 Which unit measures resistance? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
10. 10.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 100 (c) 60 (d) 10
11. 11.📏 Which unit measures the flow of charge? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
12. 12.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
13. 13.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
14. 14.📏 How many watts (W) is 4.9 kW?
15. 15.True or false: the ammeter measures voltage. (a) True (b) False
16. 16.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
17. 17.Which of these is measured in watts (W)? (a) energy used each second (b) voltage (c) resistance (d) the flow of charge
18. 18.True or false: current is measured in volts (V). (a) False (b) True
19. 19.📏 How many amperes (A) is 170 mA? =
20. 20.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
21. 21.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True
22. 22.📏 Which unit measures voltage? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
23. 23.Which of these is measured in volts (V)? (a) the push of a cell (b) power (c) how much a part resists (d) the flow of charge
24. 24.📏 How many kilowatts (kW) is 3950 W? =
25. 25.📏 How many milliamperes (mA) is 0.46 A?
26. 26.True or false: the voltmeter is joined in series. (a) True (b) False
27. 27.📏 How many kilowatts (kW) is 3150 W? =
28. 28.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) a narrow pipe (c) the water pressure (d) the flow of water
29. 29.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
30. 30.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
31. 31.📏 How many milliamperes (mA) is 1.41 A?
32. 32.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) resistance (c) current (d) voltage
33. 33.True or false: the flow of charge is measured in watts (W). (a) False (b) True
34. 34.📏 How many milliamperes (mA) is 0.41 A?
35. 35.📏 How many milliamperes (mA) is 0.18 A?
36. 36.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
37. 37.📏 How many amperes (A) is 2760 mA? =
38. 38.True or false: the voltmeter measures current. (a) False (b) True
39. 39.📏 How many kilo-ohms (kΩ) is 9900 Ω? =
40. 40.📏 How many ohms (Ω) is 7.4 kΩ?

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