Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 811 · 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 unit measures energy used each second? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
2. 2.📏 How many kilo-ohms (kΩ) is 9400 Ω? =
3. 3.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
4. 4.Which of these is measured in amperes (A)? (a) voltage (b) resistance (c) the flow of charge (d) the push of a cell
5. 5.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the flow of water (c) the water pressure (d) a narrow pipe
6. 6.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
7. 7.Which of these is measured in volts (V)? (a) power (b) the push of a cell (c) how much a part resists (d) the flow of charge
8. 8.📏 How many milliamperes (mA) is 1.13 A?
9. 9.True or false: the ammeter measures voltage. (a) False (b) True
10. 10.📏 Which unit measures voltage? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
11. 11.Which of these is measured in watts (W)? (a) the flow of charge (b) power (c) current (d) how much a part resists
12. 12.📏 Which unit measures power? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
13. 13.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
14. 14.📏 How many kilowatts (kW) is 2850 W? =
15. 15.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
16. 16.📏 How many milliamperes (mA) is 1.24 A?
17. 17.True or false: voltage is measured in amperes (A). (a) False (b) True
18. 18.True or false: power is measured in watts (W). (a) False (b) True
19. 19.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 1000 (c) 60 (d) 10
20. 20.📏 How many kilo-ohms (kΩ) is 1900 Ω? =
21. 21.True or false: the voltmeter is joined across a part. (a) True (b) False
22. 22.Which of these is measured in volts (V)? (a) resistance (b) voltage (c) how much a part resists (d) the flow of charge
23. 23.📏 How many milliamperes (mA) is 2.5 A?
24. 24.📏 Which unit measures the push of a cell? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
25. 25.📏 Which unit measures resistance? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
26. 26.True or false: the voltmeter measures voltage. (a) True (b) False
27. 27.📏 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
28. 28.True or false: the push of a cell is measured in volts (V). (a) True (b) False
29. 29.📏 How many ohms (Ω) is 6.2 kΩ?
30. 30.📏 Which unit measures how much a part resists? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
31. 31.📏 How many ohms (Ω) is 3.4 kΩ?
32. 32.📏 How many ohms (Ω) is 2.2 kΩ?
33. 33.📏 How many kilo-ohms (kΩ) is 300 Ω? =
34. 34.📏 How many watts (W) is 2.6 kW?
35. 35.True or false: the flow of charge is measured in watts (W). (a) False (b) True
36. 36.📏 Which unit measures current? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
37. 37.True or false: resistance is measured in ohms (Ω). (a) True (b) False
38. 38.True or false: the ammeter is joined across a part. (a) False (b) True
39. 39.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the flow of water (c) the water pressure (d) the pipe colour
40. 40.True or false: the voltmeter is joined in series. (a) False (b) True

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