Question

state ohm's law. wriye the necessary confitions 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 obtained from this graph.​

Answer 1

$\fbox{ \red{hope \: itz \: help \: u}}$

Answer 2

Answer:

1. Ohm's law states that at a constant temperature, current 'I' through a conductor between two points is directly proportional to the potential difference or voltage 'V', across the two points. That is, V = IR. The necessary condition is that the temperature ahould be constant. The nature of the graph is a straight line.

2. The voltmeter (V) measures the potential difference across the ends of the resistance wire (R). As the key (K) is closed, current flows in the circuit. The rheostat (Rh) is adjusted to get the minimum (non-zero) reading in the ammeter (A) and voltmeter (V). The ammeter and voltmeter readings of current (I) are noted.

3. What will be the nature of graph between potential difference and current for a conductor. ... The graph will be a straight line . This is because Potential difference , V is directly proportional to the current, I , flowing , at a constant temperature [ Ohm's law ].

4. Two physical quantities which can be obtained fr velocity-time graph are displacement and acceleration. The difference between the initial and final position of an object is called displacement. Its SI unit is metre (m). The rate of change of velocity is known as acceleration.

Explanation:

Hope it's helpful for you and mark me as the branliest.

Thanks for the question.

Stay home and stay safe.

Good night......