हिंदी

An electric current can produce

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प्रश्न

An electric current can produce

विकल्प

  • heating effect only

  • chemical effect only

  • magnetic effect only

  • chemical, heating and magnetic effects

MCQ
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उत्तर

chemical, heating and magnetic effects

Explanation:

When an electric current is passed through a conducting solution, it causes chemical reactions. The resulting effect is called chemical effect of current.

When an electric current is passed through a bulb, its filament gets heated to a high temperature and bulb starts glowing. The resulting effect is heating effect of current. Whenever an electric current is passed through a circuit, a magnetic field is produced around it. The resulting effect is magnetic effect of current.

Thus, an electric current can produce chemical, heating and magnetic effects.

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Effects of Electric Current - Chemical Effects of Electric Current
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 14: Chemical Effects of Electric Current - Multiple Choice Questions [पृष्ठ ७७]

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एनसीईआरटी एक्झांप्लर Science Exemplar [English] Class 8
अध्याय 14 Chemical Effects of Electric Current
Multiple Choice Questions | Q 1. | पृष्ठ ७७

संबंधित प्रश्न

The process that you saw in the image is used for the purification of copper. A thin plate of pure copper and a thick rod of impure copper are used as electrodes. Copper from impure rod is sought to be transferred to the thin copper plate. Which electrode should be attached to the positive terminal of the battery and why?


Boojho and Paheli performed experiments taking similar bulbs and cells but two different solutions A and B as shown in the following figure.

Boojho's Experiment Paheli's Experiment
(A) (B) 

They found that the bulb in the setup A glows more brightly as compared to that of the setup B. You would conclude that


Which of the following metals is used in electroplating to make objects appear shining?


Paheli wants to deposit silver on an iron spoon. She took silver nitrate (AgNO3) solution in a beaker and set up a simple circuit for electroplating. Which terminal of the battery should the spoon be connected to? What material should the other electrode be made of? 


In the circuit given as figure, Boojho observed that copper is deposited on the electrode connected to the negative terminal of the battery. Paheli tried to repeat the same experiment. But she could find only one copper plate. Therefore, she took a carbon rod as negative electrode. Will copper still be deposited on the carbon rod? Explain your answer.


A chemical reaction happens when electricity passes through various conducting liquids.


The terminal which is connected to a positive terminal of a battery is called ______.


Liquids that conduct electricity are the solutions of ______.


State some advantages of electroplating.


What are anodes and cathodes?


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