Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 805 · 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: voltage is measured in amperes (A). (a) True (b) False
2. 2.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
3. 3.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the water pressure (c) the flow of water (d) a bigger tank
4. 4.Which of these is measured in watts (W)? (a) power (b) voltage (c) the push of a cell (d) current
5. 5.Which of these is measured in volts (V)? (a) current (b) the flow of charge (c) resistance (d) voltage
6. 6.True or false: resistance is measured in ohms (Ω). (a) False (b) True
7. 7.📏 How many kilo-ohms (kΩ) is 2600 Ω? =
8. 8.📏 Which unit measures power? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
9. 9.📏 Which unit measures the push of a cell? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
10. 10.True or false: the voltmeter measures voltage. (a) True (b) False
11. 11.📏 How many watts (W) is 1.4 kW?
12. 12.True or false: the voltmeter measures current. (a) True (b) False
13. 13.📏 How many ohms (Ω) is 2.1 kΩ?
14. 14.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) the push of a cell (c) resistance (d) voltage
15. 15.📏 How many milliamperes (mA) is 2.59 A?
16. 16.True or false: the ammeter is joined across a part. (a) True (b) False
17. 17.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 100 (c) 10 (d) 1000
18. 18.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the tap handle (c) the water pressure (d) the water tank lid
19. 19.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 1000 (d) 10
20. 20.True or false: the ammeter measures voltage. (a) False (b) True
21. 21.📏 Which unit measures current? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
22. 22.📏 How many kilo-ohms (kΩ) is 5900 Ω? =
23. 23.📏 How many kilowatts (kW) is 500 W? =
24. 24.Which of these is measured in volts (V)? (a) energy used each second (b) how much a part resists (c) resistance (d) the push of a cell
25. 25.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the water pressure (c) a narrow pipe (d) the pipe colour
26. 26.True or false: voltage is measured in volts (V). (a) True (b) False
27. 27.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
28. 28.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
29. 29.📏 Which unit measures resistance? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
30. 30.True or false: the voltmeter is joined across a part. (a) True (b) False
31. 31.📏 How many amperes (A) is 390 mA? =
32. 32.📏 How many milliamperes (mA) is 0.56 A?
33. 33.📏 How many milliamperes (mA) is 0.49 A?
34. 34.📏 Which unit measures voltage? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
35. 35.📏 How many amperes (A) is 2600 mA? =
36. 36.True or false: the voltmeter is joined in series. (a) True (b) False
37. 37.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
38. 38.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
39. 39.📏 How many amperes (A) is 220 mA? =
40. 40.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True

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