Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 812 · 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 4500 W? =
2. 2.True or false: the ammeter measures current. (a) False (b) True
3. 3.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
4. 4.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
5. 5.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True
6. 6.True or false: the ammeter is joined across a part. (a) True (b) False
7. 7.📏 Which unit measures resistance? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
8. 8.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
9. 9.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
10. 10.Which of these is measured in volts (V)? (a) resistance (b) how much a part resists (c) the push of a cell (d) the flow of charge
11. 11.True or false: voltage is measured in volts (V). (a) False (b) True
12. 12.📏 How many kilowatts (kW) is 4200 W? =
13. 13.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 100 (c) 1000 (d) 1024
14. 14.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the pipe colour (c) the water tank lid (d) the water pressure
15. 15.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
16. 16.True or false: the voltmeter measures voltage. (a) False (b) True
17. 17.True or false: the push of a cell is measured in volts (V). (a) False (b) True
18. 18.True or false: resistance is measured in watts (W). (a) True (b) False
19. 19.📏 How many kilo-ohms (kΩ) is 700 Ω? =
20. 20.📏 How many milliamperes (mA) is 0.18 A?
21. 21.True or false: energy used each second is measured in ohms (Ω). (a) False (b) True
22. 22.📏 How many milliamperes (mA) is 2.3 A?
23. 23.📏 How many ohms (Ω) is 6.4 kΩ?
24. 24.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 1000 (d) 60
25. 25.📏 Which unit measures voltage? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
26. 26.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the water pressure (c) a narrow pipe (d) the flow of water
27. 27.📏 How many kilowatts (kW) is 2350 W? =
28. 28.📏 How many milliamperes (mA) is 0.21 A?
29. 29.True or false: how much a part resists is measured in volts (V). (a) False (b) True
30. 30.True or false: power is measured in amperes (A). (a) False (b) True
31. 31.Which of these is measured in volts (V)? (a) the flow of charge (b) how much a part resists (c) resistance (d) voltage
32. 32.📏 How many ohms (Ω) is 3.3 kΩ?
33. 33.Which of these is measured in amperes (A)? (a) the push of a cell (b) voltage (c) the flow of charge (d) resistance
34. 34.📏 Which unit measures current? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
35. 35.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
36. 36.📏 Which unit measures energy used each second? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
37. 37.📏 How many amperes (A) is 390 mA? =
38. 38.True or false: current is measured in ohms (Ω). (a) False (b) True
39. 39.True or false: the ammeter is joined in series. (a) True (b) False
40. 40.📏 How many ohms (Ω) is 4.7 kΩ?

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