State ohm's law. Write the necessary conditins for its validity. How is the law verified experimentally? What will be the nature of graph between V and I for a conductors? Name the physical quantity which can be determined by this grpah?

What is ohm's law? How can it be verified?

State and explain Lenz’s law of electromagnetic Induction. Give one example to illustrate the law. How it can be verified experimentally?

The graph between current and the potential diference in the experimental verification of Ohm's law were drawn by four students as shown in fig. which one of the following is correct?

What is electromagnetic induction ? State its laws. Describe the methods for producing induced e.m.f. State the law by which the direction of induced current can be determined.

An electric circuit consisting of a 1 m long metallic wire XY, an ammeter, a voltmeter, 4 cells of 1.5 V and a plug key was set up. Draw a schematic diagram of this electric circuit on the on positon. Following grpah was plotted between the values of potential difference and current. what conclusins do you draw about the relation between V and I from this graph? state this relations in your words.

Write the names and symbols of two most reactive metals belongiong to group I of the periodic table. Explain by drawing electronic structure how either one of the two metals reacts with halogen. With which name is the bond formed between these elements known and what is the class of the compuond so formed known? state any four physical properties of such compounds.

What happens when an aqueous solution of sodium sulphate reacts with an aqueous solution of barium chloride? State the physical conditions of reactants in which the reaction between them will not take place. Write the balanced chemical equation for the reaction and name the type of reaction.