You are given the following materials two coils on a non conducting cylindrical rod, a key, a battery, a galvanometer and connecting wire. Use this to demonstrate the phenomenon of electromagnetic induction. Draw the relevant circuit diagram.

In a potentiometer, a standard cell of emf 5V and of negligible resistance maintains a steady current through the galvanometer wire of length 5 m. Two primary cells of emfs epsilon_(1) and epsilon_(2) are joined in series with (i) same polarity and (ii) apposite polarity.The combination is connected through it galvanometer and a joined to the potentiometer. The balancing length is the two cases are found to be 350 cm and 50 cm respectively Draw the necessary circuit diagram.

you are given three resistors of 10 ohm 10 ohm and 20 Ohm a battery of EMF 2.5 volt one key an ammeter a voltmeter. draw a circuit diagram showing the correct connection of all given components such that voltmeter connected across the ends of 20 ohm resistor give the reading of 2.0 volt.

Deduce the conditions for balance in a wheatstone bridge. Using the principle of Wheatstone bridge, describe the method to determine the specific resistane of a wire in the laboratory. Draw the circuit diagram and write the formula used. Write any two important precautions you would observe, while performing the experiment.

You are provided with the following substances: copper rod, zinc rod, salt bridge, two glass beaker, a piece of wire, 1 M CuSO_4 solution, 1 M ZnSO_4 solutoin. Represent the cell made using the above materials.

Direction. In the following questions, a statement of assertion is followed by a statement of reason. While answering a question, you are required to choose the correct are out of the given four responses and mark it as (A). If both assertion and reason are true and reason is the correct explanation of the assertion, (B) if both assertion and reason are true but reason is not correct explanation of the assertion. (C) if assertion is true, but reason if false, (D) if both assertion and reason are false Assertion : When an iron rod is inserted into a coil connected to a bulb in an a.c. circuit, the glow in the bulb decreases. Reason : The current in the coil increases, thereby decreasing current through the bulb

Direction. In the follwing questions, a statement of assertion is followed by a statement of reason. While answering a question, you are required to choose the correct are out of the given four responses and mark it as (A). If both assertion and reason are true and reason is the correct explanation of the assertion, (B) if both assertion and reason are true but reason is not correct explanation of the assertion. (C) if asssertion is true, but reason if false, (D) if both assertion and reason are false Assertion : Copper wires are used as the connecting wires in an electical circuit, as its resisitvity is low and condutivity is high. Reason: Copper can be easily drawn into wires

Direction. In the follwing questions, a statement of assertion is followed by a statement of reason. While answering a question, you are required to choose the correct are out of the given four responses and mark it as (A). If both assertion and reason are true and reason is the correct explanation of the assertion, (B) if both assertion and reason are true but reason is not correct explanation of the assertion. (C) if asssertion is true, but reason if false, (D) if both assertion and reason are false Assertion : To compare the e.m.fs of two cells using a potentiometer, the e.m.f. of the cell in auxillary circuit must be greater than the e.m.fs of both the cells. Reason : The area of cross-section of the wire should be uniform and current through the wire should always be kept constant.

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.

The question given below consist of an assertion (A) and a reason ( R). Use the following key to choose the appropriate answer to these questions from the codes (a), (b), ( c) and (d) given below: (a) Both A and R are true and R is the correct explanation of A. (b) Both A and R are true but R is NOT the correct explanation of A. (c) A is true but R is false. (d) A is false and R is also false. Assertion:The connecting wires are made of copper. Reason:The electrical conductivity of copper is high.