Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 33 · 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.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the tap handle (c) the water pressure (d) the pipe colour
2. 2.Which of these is measured in amperes (A)? (a) current (b) voltage (c) the push of a cell (d) how much a part resists
3. 3.📏 How many ohms (Ω) is 5.1 kΩ?
4. 4.Which of these is measured in watts (W)? (a) voltage (b) power (c) current (d) the push of a cell
5. 5.True or false: the voltmeter is joined in series. (a) True (b) False
6. 6.Which of these is measured in volts (V)? (a) power (b) current (c) how much a part resists (d) the push of a cell
7. 7.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) a narrow pipe (c) the pipe colour (d) the water pressure
8. 8.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
9. 9.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
10. 10.📏 How many kilowatts (kW) is 100 W? =
11. 11.📏 Which unit measures the push of a cell? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
12. 12.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 10 (c) 100 (d) 1024
13. 13.📏 How many kilo-ohms (kΩ) is 8900 Ω? =
14. 14.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 1000 (c) 10 (d) 100
15. 15.True or false: the voltmeter measures voltage. (a) True (b) False
16. 16.📏 How many kilo-ohms (kΩ) is 5000 Ω? =
17. 17.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
18. 18.📏 Which unit measures voltage? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
19. 19.📏 Which unit measures resistance? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
20. 20.True or false: the voltmeter is joined across a part. (a) True (b) False
21. 21.📏 Which unit measures energy used each second? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
22. 22.True or false: the ammeter is joined in series. (a) False (b) True
23. 23.📏 How many ohms (Ω) is 7 kΩ?
24. 24.📏 How many milliamperes (mA) is 0.07 A?
25. 25.📏 How many kilowatts (kW) is 1100 W? =
26. 26.📏 How many watts (W) is 1.8 kW?
27. 27.📏 How many kilowatts (kW) is 1650 W? =
28. 28.📏 How many amperes (A) is 670 mA? =
29. 29.True or false: current is measured in volts (V). (a) True (b) False
30. 30.📏 Which unit measures current? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
31. 31.📏 How many watts (W) is 0.8 kW?
32. 32.True or false: the flow of charge is measured in volts (V). (a) False (b) True
33. 33.True or false: the push of a cell is measured in watts (W). (a) False (b) True
34. 34.Which of these is measured in ohms (Ω)? (a) energy used each second (b) the push of a cell (c) resistance (d) current
35. 35.True or false: the ammeter measures current. (a) False (b) True
36. 36.True or false: current is measured in ohms (Ω). (a) True (b) False
37. 37.📏 Which unit measures how much a part resists? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
38. 38.True or false: current is measured in amperes (A). (a) False (b) True
39. 39.📏 How many kilo-ohms (kΩ) is 5900 Ω? =
40. 40.📏 How many kilowatts (kW) is 2600 W? =

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