You are required to make an electromagnet from a soft iron bar by using a cell, an insulated coil of copper wire and a switch. Draw a circuit diagram to represent the process.

You are required to make an electromagnet from a soft iron bar by using a cell, an insulated coil of copper wire and a switch Label the poles of the electromagnet.

You are given a U shaped soft iron piece, insulated copper wire and a battery. Draw a circuit diagram to make a horse shoe electromagnet.

Draw a labelled diagram to make an electro magnet from a soft iron bar AB. Mark the polarity at its ends. What precaution would you observe ?

You are given a resistance wire AB connected with a cell and a key as shown in Fig. 9.14. You are required to measure the current in the wire AB and potential difference across it. Name the instruments that you would use and draw a labelled diagram to show how are they connected, Also mark the direction of current in each component.

Draw a labelled diagram to make a soft iron bar as an electromagnet. Describe in steps the procedure.

A coil of insulated copper wire is connected to a galvanometer. What will happen if a bar magnet is : (a) Pushed into the coil. (b) Withdrawn from the coil. (c) held stationary near the coil. Draw diagram to represent each situation and explain the deflection in the galvanometer.

You are provided with a torch bulb, a cell and two plastic coated metal wires. Draw a diagram to show a complete circuit to light the bulb.

Potentiometer wire PQ of 1 m length is connected to a standard cell E_(1) . Another cell E_(2) of emf 1.02 V is connected with a resistance r and a switch S as shown in the circuit diagram. With switch S open, the null position is obtained at a distance of 51 cm from P . (i) Calculate the potential gradient of the potentiometer wire. (ii) Find the emf of cell E_(1) . (iii) When switch S is closed, will the null point move toward P or toward Q ? Give reason for your answer.

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.

Using the principle of Wheatstone Bridge, describe the method to determine the specific resistance 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.