Show with the aid of a diagram how a wire is wound on a U-shaped piece of soft iron in order to make it an electromagnet. Complete the circuit diagram and label the poles of the electromagnet.

With the help of a diagram, describe how you would make an electromagnet.

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.

The diagram shows a coil wound around a U shape soft iron bar AB. Suggest one way to strengthen the magnetic field in the electromagnet.

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

The diagram shows a coil wound around a U shape soft iron bar AB. What will be the polarities at A and B if the direction of current is reversed in the circuit ?

The diagram shows a coil wound around a U shape soft iron bar AB. What is the polarity induced at the ends A and B when the switch is pressed ?

The diagram shows a coil wound around a U shape soft iron bar AB. What is the polarity induced at the ends A and B when the switch is pressed ?

Given below are diagrams showing the different stages in the process of fertilisation of an egg in the human female reproductive tract. Study the diagrams and answer the questions (i) Arrange the letters given below each diagram in a logical sequence to show the correct order in the process of fertilisation. (ii) Where does fertilisation normally take place? What is 'Implantation' that follows fertilisation ? (iii) Mention the chromosome number of the egg and zygote in humans. (iv) Explain the term 'Gestation'. How long does Gestation last in humans ? (v) Draw a neat, labelled diagram of a mature human sperm.

The diagram in Fig. shows the electrical system of a car to operate the two head lights and two rear lights by a switch. shows a connection to the body of the car. The diagram shows only one lead from the battery to each bulb, but a complete circuit must have two leads. How does the current get back to the battery?