State Ohm's law and draw a neat labelled circuit diagram containing a battery, a key, a voltmeter, an ammeter, a rheostat and an unknown resistance to verify it.

Draw a well labelled circuit diagram for the verification of Ohm.s law.

State Ohm's law. Draw a labelled circuit diagram to verify this law in the laboratory. If you draw a graph between the potential difference and current flowing through a metallic conductor, what kind of curve will you get? Explain how would you use this graph to determine the resistance of the conductor.

Draw a neat and labelled diagram of a screw gauge. Name its main parts and state their functions.

Draw a circuit diagram of an electric circuit containing a cell, a key, an ammeter, a resistance of 2 Omega in series with a combination of two resistors ( 4 Omega each) in parallel and a voltmeter across the parallel combination. Will the potential difference across the 2 Omega resistor be the same as that across the parallel combination of 4 Omega resistors ? Give reason.

Draw a labelled circuit diagram of a potentiometer to measure internal resistance of a cell. Write the working formula. (Derivation not required).

State ohm's law. In the circuit shown in figure, a voltmeter reads 30 volts when it is connected across 400 ohm resistance. Calculate what the same voltmeter will read when it is connected across the 300 ohm resistance.

Draw a schematic diagram of a circuit consisting of a battery of three cells of 2 V each, a 5 ohm resistor, an 8 ohm resistor, and a 12 ohm resistor, and a plug key, all connected in series.

Draw a neat and labelled diagram of a fish and answer the following questions : State wheter it is an aquatic animal or a terrestrial animal . Why ?

You have following material : An ammeter ( 0-1A0 ,a voltmeter ( 0-3V) , a resistor of 20 Omega , a key, a rheostat, a battery of 3 V and seven connecting wires. Using this material draw a labelled circuit diagram to study the dependence of potential difference (V) across a resistor ont he current (I) passing through it.

Shows a wire of length l which can slide on a U- shaped rail of negligible resistance. The resistance of the wire is R. The wire is pulled ot the right with a constant speed v. Draw an equivalent circuit diagram representing the induced emf by a battery. Find the current in the wire usingj this diagram.