Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 797 · 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.📏 How many watts (W) is 2.5 kW?
2. 2.True or false: the ammeter measures current. (a) False (b) True
3. 3.Which of these is measured in watts (W)? (a) voltage (b) power (c) how much a part resists (d) the flow of charge
4. 4.Which of these is measured in amperes (A)? (a) how much a part resists (b) voltage (c) energy used each second (d) current
5. 5.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
6. 6.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the water pressure (d) the pipe colour
7. 7.True or false: the ammeter is joined across a part. (a) False (b) True
8. 8.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a bigger tank (c) the water pressure (d) a narrow pipe
9. 9.True or false: the flow of charge is measured in volts (V). (a) True (b) False
10. 10.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
11. 11.True or false: the ammeter is joined in series. (a) True (b) False
12. 12.True or false: resistance is measured in ohms (Ω). (a) True (b) False
13. 13.True or false: the ammeter measures voltage. (a) True (b) False
14. 14.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
15. 15.📏 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
16. 16.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
17. 17.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 100 (c) 10 (d) 1000
18. 18.Which of these is measured in ohms (Ω)? (a) current (b) the push of a cell (c) resistance (d) energy used each second
19. 19.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
20. 20.📏 How many milliamperes (mA) is 2.93 A?
21. 21.📏 How many kilowatts (kW) is 300 W? =
22. 22.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
23. 23.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 1000 (d) 10
24. 24.Which of these is measured in volts (V)? (a) resistance (b) voltage (c) current (d) energy used each second
25. 25.📏 How many watts (W) is 2.3 kW?
26. 26.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
27. 27.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
28. 28.📏 How many kilo-ohms (kΩ) is 6500 Ω? =
29. 29.📏 How many kilowatts (kW) is 4300 W? =
30. 30.📏 Which unit measures resistance? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
31. 31.📏 How many ohms (Ω) is 2 kΩ?
32. 32.📏 Which unit measures how much a part resists? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
33. 33.📏 How many amperes (A) is 260 mA? =
34. 34.True or false: the voltmeter measures current. (a) False (b) True
35. 35.📏 How many kilo-ohms (kΩ) is 900 Ω? =
36. 36.📏 How many kilo-ohms (kΩ) is 4600 Ω? =
37. 37.📏 How many ohms (Ω) is 7.1 kΩ?
38. 38.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
39. 39.📏 How many amperes (A) is 490 mA? =
40. 40.📏 Which unit measures power? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)

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