Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 56 · 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.True or false: the voltmeter measures current. (a) True (b) False
2. 2.True or false: the ammeter measures voltage. (a) True (b) False
3. 3.📏 How many ohms (Ω) is 7.3 kΩ?
4. 4.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the pipe colour (c) the tap handle (d) the water pressure
5. 5.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 60 (c) 100 (d) 1000
6. 6.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
7. 7.True or false: the flow of charge is measured in volts (V). (a) True (b) False
8. 8.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
9. 9.True or false: current is measured in ohms (Ω). (a) False (b) True
10. 10.📏 How many ohms (Ω) is 2.4 kΩ?
11. 11.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
12. 12.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) a narrow pipe (d) the flow of water
13. 13.📏 How many ohms (Ω) is 6.3 kΩ?
14. 14.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
15. 15.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
16. 16.Which of these is measured in watts (W)? (a) current (b) power (c) resistance (d) voltage
17. 17.📏 How many amperes (A) is 980 mA? =
18. 18.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the flow of water (c) a bigger tank (d) the water pressure
19. 19.Which of these is measured in ohms (Ω)? (a) power (b) resistance (c) voltage (d) energy used each second
20. 20.True or false: voltage is measured in volts (V). (a) True (b) False
21. 21.📏 How many watts (W) is 1.1 kW?
22. 22.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
23. 23.📏 How many watts (W) is 1.2 kW?
24. 24.Which of these is measured in amperes (A)? (a) the flow of charge (b) power (c) how much a part resists (d) voltage
25. 25.📏 How many ohms (Ω) is 1.2 kΩ?
26. 26.📏 Which unit measures voltage? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
27. 27.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
28. 28.True or false: the voltmeter is joined in series. (a) True (b) False
29. 29.📏 Which unit measures resistance? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
30. 30.📏 How many ohms (Ω) is 1.1 kΩ?
31. 31.📏 How many watts (W) is 0.3 kW?
32. 32.True or false: the flow of charge is measured in watts (W). (a) True (b) False
33. 33.True or false: resistance is measured in watts (W). (a) True (b) False
34. 34.Which of these is measured in volts (V)? (a) energy used each second (b) the push of a cell (c) current (d) the flow of charge
35. 35.📏 How many milliamperes (mA) is 0.37 A?
36. 36.📏 How many kilo-ohms (kΩ) is 8500 Ω? =
37. 37.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
38. 38.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 100 (c) 1024 (d) 10
39. 39.📏 How many kilowatts (kW) is 3000 W? =
40. 40.📏 How many kilowatts (kW) is 850 W? =

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