Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 741 · 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, resistance is like … (a) a bigger tank (b) a narrow pipe (c) the flow of water (d) the water pressure
2. 2.Which of these is measured in watts (W)? (a) power (b) the push of a cell (c) how much a part resists (d) the flow of charge
3. 3.📏 Which unit measures how much a part resists? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
4. 4.📏 Which unit measures the flow of charge? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
5. 5.Which of these is measured in watts (W)? (a) the push of a cell (b) current (c) how much a part resists (d) energy used each second
6. 6.True or false: energy used each second is measured in volts (V). (a) True (b) False
7. 7.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
8. 8.True or false: the ammeter measures voltage. (a) False (b) True
9. 9.True or false: the ammeter is joined in series. (a) False (b) True
10. 10.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the pipe colour (c) the water pressure (d) the flow of water
11. 11.True or false: the voltmeter is joined across a part. (a) False (b) True
12. 12.📏 Which unit measures resistance? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
13. 13.📏 How many watts (W) is 0.8 kW?
14. 14.📏 How many kilowatts (kW) is 3250 W? =
15. 15.True or false: voltage is measured in amperes (A). (a) False (b) True
16. 16.📏 How many milliamperes (mA) is 0.07 A?
17. 17.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1000 (c) 10 (d) 1024
18. 18.📏 How many kilo-ohms (kΩ) is 600 Ω? =
19. 19.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
20. 20.True or false: voltage is measured in volts (V). (a) False (b) True
21. 21.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
22. 22.Which of these is measured in amperes (A)? (a) resistance (b) how much a part resists (c) the push of a cell (d) current
23. 23.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
24. 24.📏 How many milliamperes (mA) is 2 A?
25. 25.📏 How many ohms (Ω) is 0.5 kΩ?
26. 26.📏 How many ohms (Ω) is 9.7 kΩ?
27. 27.True or false: the voltmeter measures voltage. (a) True (b) False
28. 28.📏 How many watts (W) is 0.6 kW?
29. 29.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the pipe colour (c) the water tank lid (d) the tap handle
30. 30.True or false: resistance is measured in ohms (Ω). (a) True (b) False
31. 31.True or false: the push of a cell is measured in volts (V). (a) False (b) True
32. 32.True or false: the flow of charge is measured in volts (V). (a) False (b) True
33. 33.📏 How many milliamperes (mA) is 1.72 A?
34. 34.📏 How many ohms (Ω) is 7.7 kΩ?
35. 35.True or false: the ammeter measures current. (a) False (b) True
36. 36.True or false: voltage is measured in ohms (Ω). (a) True (b) False
37. 37.📏 How many ohms (Ω) is 1.9 kΩ?
38. 38.Which of these is measured in volts (V)? (a) current (b) resistance (c) the push of a cell (d) the flow of charge
39. 39.📏 How many kilowatts (kW) is 3100 W? =
40. 40.📏 How many ohms (Ω) is 6.9 kΩ?

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