Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 448 · 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 kilowatts (kW) is 500 W? =
2. 2.Which of these is measured in amperes (A)? (a) the push of a cell (b) resistance (c) current (d) energy used each second
3. 3.📏 Which unit measures the push of a cell? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
4. 4.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the pipe colour (c) a narrow pipe (d) the water pressure
5. 5.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the tap handle (c) the water tank lid (d) the water pressure
6. 6.True or false: the ammeter measures current. (a) True (b) False
7. 7.📏 How many kilo-ohms (kΩ) is 7200 Ω? =
8. 8.📏 How many watts (W) is 1 kW?
9. 9.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the water pressure (c) the flow of water (d) a narrow pipe
10. 10.📏 How many ohms (Ω) is 4.2 kΩ?
11. 11.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
12. 12.📏 Which unit measures resistance? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
13. 13.📏 How many ohms (Ω) is 3.3 kΩ?
14. 14.📏 How many kilo-ohms (kΩ) is 1100 Ω? =
15. 15.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
16. 16.Which of these is measured in volts (V)? (a) power (b) current (c) voltage (d) resistance
17. 17.📏 How many milliamperes (mA) is 0.26 A?
18. 18.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
19. 19.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
20. 20.True or false: the flow of charge is measured in volts (V). (a) True (b) False
21. 21.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True
22. 22.📏 How many milliamperes (mA) is 2.84 A?
23. 23.📏 Which unit measures how much a part resists? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
24. 24.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 100 (c) 10 (d) 60
25. 25.True or false: the ammeter is joined in series. (a) True (b) False
26. 26.📏 How many kilo-ohms (kΩ) is 3600 Ω? =
27. 27.True or false: the ammeter is joined across a part. (a) False (b) True
28. 28.Which of these is measured in watts (W)? (a) current (b) energy used each second (c) the flow of charge (d) the push of a cell
29. 29.📏 How many milliamperes (mA) is 1.83 A?
30. 30.True or false: how much a part resists is measured in watts (W). (a) False (b) True
31. 31.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 10 (c) 1000 (d) 100
32. 32.📏 How many kilo-ohms (kΩ) is 3900 Ω? =
33. 33.📏 How many kilo-ohms (kΩ) is 1400 Ω? =
34. 34.True or false: energy used each second is measured in watts (W). (a) False (b) True
35. 35.📏 How many milliamperes (mA) is 1.5 A?
36. 36.📏 How many amperes (A) is 1050 mA? =
37. 37.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
38. 38.📏 How many kilo-ohms (kΩ) is 2700 Ω? =
39. 39.True or false: energy used each second is measured in amperes (A). (a) False (b) True
40. 40.📏 Which unit measures the flow of charge? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)

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