Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 58 · 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) the flow of water (b) the water pressure (c) a narrow pipe (d) a bigger tank
2. 2.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
3. 3.True or false: the voltmeter is joined across a part. (a) False (b) True
4. 4.📏 How many kilowatts (kW) is 2850 W? =
5. 5.📏 How many milliamperes (mA) is 0.8 A?
6. 6.True or false: current is measured in amperes (A). (a) False (b) True
7. 7.📏 How many amperes (A) is 2280 mA? =
8. 8.📏 How many ohms (Ω) is 3.3 kΩ?
9. 9.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
10. 10.📏 How many kilo-ohms (kΩ) is 8900 Ω? =
11. 11.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
12. 12.📏 How many watts (W) is 0.8 kW?
13. 13.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the tap handle (c) the water tank lid (d) the pipe colour
14. 14.📏 How many milliamperes (mA) is 1.36 A?
15. 15.📏 Which unit measures current? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
16. 16.True or false: the voltmeter is joined in series. (a) False (b) True
17. 17.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
18. 18.📏 How many milliamperes (mA) is 0.65 A?
19. 19.Which of these is measured in ohms (Ω)? (a) resistance (b) power (c) voltage (d) energy used each second
20. 20.📏 How many ohms (Ω) is 0.3 kΩ?
21. 21.📏 How many kilowatts (kW) is 3750 W? =
22. 22.📏 Which unit measures resistance? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
23. 23.📏 How many milliamperes (mA) is 2.14 A?
24. 24.📏 How many kilo-ohms (kΩ) is 4800 Ω? =
25. 25.Which of these is measured in amperes (A)? (a) power (b) voltage (c) current (d) resistance
26. 26.True or false: energy used each second is measured in volts (V). (a) False (b) True
27. 27.True or false: the ammeter is joined across a part. (a) True (b) False
28. 28.True or false: current is measured in ohms (Ω). (a) True (b) False
29. 29.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
30. 30.📏 Which unit measures the push of a cell? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
31. 31.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) a narrow pipe (c) the flow of water (d) the pipe colour
32. 32.True or false: energy used each second is measured in amperes (A). (a) False (b) True
33. 33.📏 How many ohms (Ω) is 4.1 kΩ?
34. 34.📏 How many kilo-ohms (kΩ) is 400 Ω? =
35. 35.Which of these is measured in amperes (A)? (a) resistance (b) the flow of charge (c) voltage (d) the push of a cell
36. 36.True or false: the voltmeter measures current. (a) False (b) True
37. 37.Which of these is measured in volts (V)? (a) the push of a cell (b) current (c) how much a part resists (d) energy used each second
38. 38.Which of these is measured in volts (V)? (a) how much a part resists (b) voltage (c) current (d) resistance
39. 39.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 100 (c) 1000 (d) 10
40. 40.📏 How many kilowatts (kW) is 3000 W? =

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