Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 173 · 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 ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1000 (c) 100 (d) 1024
2. 2.📏 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
3. 3.Which of these is measured in ohms (Ω)? (a) power (b) current (c) how much a part resists (d) voltage
4. 4.📏 Which unit measures power? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
5. 5.True or false: the ammeter is joined across a part. (a) True (b) False
6. 6.True or false: the push of a cell is measured in amperes (A). (a) False (b) True
7. 7.📏 How many amperes (A) is 30 mA? =
8. 8.📏 How many watts (W) is 4 kW?
9. 9.📏 Which unit measures energy used each second? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
10. 10.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) a bigger tank (c) the water pressure (d) the flow of water
11. 11.📏 Which unit measures resistance? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
12. 12.True or false: voltage is measured in ohms (Ω). (a) True (b) False
13. 13.True or false: voltage is measured in volts (V). (a) False (b) True
14. 14.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) resistance (c) power (d) energy used each second
15. 15.📏 How many amperes (A) is 1050 mA? =
16. 16.True or false: energy used each second is measured in volts (V). (a) True (b) False
17. 17.📏 How many milliamperes (mA) is 2.22 A?
18. 18.📏 How many ohms (Ω) is 3.6 kΩ?
19. 19.Which of these is measured in amperes (A)? (a) power (b) the push of a cell (c) the flow of charge (d) voltage
20. 20.True or false: the voltmeter measures voltage. (a) False (b) True
21. 21.📏 Which unit measures the flow of charge? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
22. 22.Which of these is measured in watts (W)? (a) the flow of charge (b) voltage (c) how much a part resists (d) energy used each second
23. 23.True or false: the ammeter is joined in series. (a) False (b) True
24. 24.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
25. 25.📏 How many milliamperes (mA) is 1.86 A?
26. 26.True or false: power is measured in ohms (Ω). (a) True (b) False
27. 27.📏 How many kilo-ohms (kΩ) is 4400 Ω? =
28. 28.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True
29. 29.📏 Which unit measures the push of a cell? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
30. 30.📏 How many milliamperes (mA) is 2.17 A?
31. 31.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 100 (c) 10 (d) 1000
32. 32.Which of these is measured in volts (V)? (a) how much a part resists (b) energy used each second (c) voltage (d) current
33. 33.True or false: resistance is measured in watts (W). (a) True (b) False
34. 34.📏 How many kilowatts (kW) is 4300 W? =
35. 35.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the pipe colour (c) the flow of water (d) a narrow pipe
36. 36.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
37. 37.📏 How many watts (W) is 0.8 kW?
38. 38.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
39. 39.📏 How many kilowatts (kW) is 1000 W? =
40. 40.📏 How many amperes (A) is 110 mA? =

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