मराठी

You are provided with a magnetic compass, an empty matchbox, a battery of two cells and connecting wires. Using these objects, how will you make a tester f

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प्रश्न

You are provided with a magnetic compass, an empty matchbox, a battery of two cells and connecting wires. Using these objects, how will you make a tester for testing an electric circuit? Draw the necessary circuit diagram and explain.

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स्पष्ट करा
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उत्तर


Whenever current flows through the circuit the magnetic compass needle shows deflection due to magnetic effect of current.

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Effects of Electric Current - Chemical Effects of Electric Current
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पाठ 14: Chemical Effects of Electric Current - Long Answer Questions [पृष्ठ ८५]

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एनसीईआरटी एक्झांप्लर Science Exemplar [English] Class 8
पाठ 14 Chemical Effects of Electric Current
Long Answer Questions | Q 24. | पृष्ठ ८५

संबंधित प्रश्‍न

If you pass current through copper sulphate solution, copper gets deposited on the plate connected to the ______ terminal of the battery.


Prepare a list of objects around you that are electroplated.


In an electrolyte the current is due to the flow of ______.


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


Boojho’s uncle has set up an electroplating factory near his village. He should dispose off the waste of the factory


Paheli set up an experiment using liquid A in the beaker as shown in the following figure. She observed that the bulb glows. Then she replaced the liquid A by another liquid B. This time the bulb did not glow. Boojho suggested replacing the bulb by an LED. They observed that the LED glows. Explain.


Observe the following circuits carefully. In which circuit will the bulb glow? Write Yes or No in the blank space provided along each of the circuit given in the figure.

(a)


Piece of coal

______

(b)


Iron nail

______

(c)


Eraser

______

(d)


Steel spoon

______

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


Match the following

1. Anode a. Conducting solution
2. Cathode b. Positive terminal
3. Ions c. Negative terminal
4. Electrolyte d. Positively or negatively charged

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