state Ohms law.write the necessary condition for its validity. how is this law verified experimentally? what will be the nature of graph between potential difference and current for a conductor? name the physical quantity that can be determined from this graph

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Solution

$O h m' s L a w : A t c o n s \tan t t e m p e r a t u r e, t h e c u r r e n t f l o w i n g t h r o u g h a c o n d u c t o r i s d i r e c t l y p r o p o t i o n a l t o t h e p o t e n t i a l d i f f e r e n c e a c r o s s i t s e n d s . \frac{V}{I} = R T e m p e r a t u r e s h o u l d b e c o n s \tan t . G r a p h b e t w e e n V a n d I i s s t r a i g h t l i n e . I f w e a p p l i e d a p o t e n t i a l d i f f e r e n c e a c r o s s a p a r t i c u l a r r e s i s \tan c e t h e n w e c a n d e t e r m i n e t h e a m o u n t o f c u r r e n t f l o w i n g t h r o u g h i t .$

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Similar questions

(a) Name and state the law which relates the potential difference and current in a conductor,
(b) What is the necessary condition for a conductor to obey the law named above in part(a)?

The graph of potential difference (V) versus current (I) for an ohmic resistor is a straight line as shown below:

The resistance of the resistor can be determined from this graph as:

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