Physics, asked by shouryad61, 3 months ago

In a meter bridge the gaps are closed by resistance R and S. R is being less than S. It makes a comtact at a point 40cm from the zero end. On shunting the coil S, witha resistance of 50ohm the balance point moves through 10 cm. Then R and S are​

Answers

Answered by Anonymous
2

Answer:

होली हिंदुओं के एक प्रमुख त्योहार के रूम में जाना जाता है। होली सिर्फ हिन्दुओं ही नहीं बल्कि सभी समुदाय के लोगों द्वारा उल्लास के साथ मनाया जाता है। होली का त्योहार लोग आपस में मिलकर, गले लगकर और एक दूसरे को रंग लगाकर मनाते हैं। इस दौरान धार्मिक और फागुन गीत भी गाये जाते हैं।

Answered by skpillai636
1

Answer:

Explanation:

Case 1 :

Null point is found at  l1​=40 cm

Using balanced Wheatstone bridge condition,   X2​=100−l1​l1​​

∴   X2​=100−4040​

⟹  X=3Ω

Case 2 :

New null point is found at  l2​=50 cm

Using balanced Wheatstone bridge condition,   X′2​=100−l2​l2​​

∴   X′2​=100−5050​

⟹  X′=2Ω

Since the unknown resistance gets decreased, thus we have to connect a resistance R in parallel to X so that X′ comes out to be 2Ω.

Thus resistance of parallel combination  X′=X+RXR​

∴   2=3+R3R​

⟹  R=6Ω

Hence 6Ω must be connected in parallel to unknown resistance X

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