Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 202 · 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.📏 Which unit measures the push of a cell? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
2. 2.📏 How many watts (W) is 2.2 kW?
3. 3.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 60 (c) 1000 (d) 10
4. 4.True or false: the ammeter measures current. (a) False (b) True
5. 5.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the water pressure (c) the flow of water (d) the pipe colour
6. 6.Which of these is measured in watts (W)? (a) the push of a cell (b) energy used each second (c) current (d) voltage
7. 7.📏 How many amperes (A) is 2880 mA? =
8. 8.True or false: current is measured in amperes (A). (a) True (b) False
9. 9.True or false: the ammeter measures voltage. (a) True (b) False
10. 10.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
11. 11.📏 Which unit measures resistance? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
12. 12.True or false: the voltmeter is joined across a part. (a) False (b) True
13. 13.📏 How many kilowatts (kW) is 300 W? =
14. 14.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the water pressure (c) the tap handle (d) the pipe colour
15. 15.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 10 (c) 100 (d) 1000
16. 16.True or false: power is measured in watts (W). (a) True (b) False
17. 17.📏 Which unit measures current? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
18. 18.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
19. 19.📏 How many amperes (A) is 490 mA? =
20. 20.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
21. 21.True or false: energy used each second is measured in watts (W). (a) True (b) False
22. 22.📏 How many amperes (A) is 2670 mA? =
23. 23.Which of these is measured in volts (V)? (a) energy used each second (b) the push of a cell (c) power (d) the flow of charge
24. 24.True or false: the ammeter is joined across a part. (a) False (b) True
25. 25.True or false: the voltmeter is joined in series. (a) False (b) True
26. 26.📏 How many kilo-ohms (kΩ) is 4200 Ω? =
27. 27.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) the water pressure (c) a bigger tank (d) a narrow pipe
28. 28.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
29. 29.📏 Which unit measures power? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
30. 30.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
31. 31.📏 How many watts (W) is 3.6 kW?
32. 32.📏 How many kilowatts (kW) is 4350 W? =
33. 33.📏 How many kilo-ohms (kΩ) is 6000 Ω? =
34. 34.True or false: power is measured in volts (V). (a) True (b) False
35. 35.📏 Which unit measures voltage? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
36. 36.Which of these is measured in ohms (Ω)? (a) resistance (b) voltage (c) current (d) energy used each second
37. 37.📏 How many ohms (Ω) is 8.6 kΩ?
38. 38.Which of these is measured in watts (W)? (a) resistance (b) power (c) the flow of charge (d) current
39. 39.📏 How many watts (W) is 2.5 kW?
40. 40.True or false: the ammeter is joined in series. (a) True (b) False

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