1. Why is a series arrangement not used for connecting domestic electrical appliances in a circuit?
2. Draw a diagram to show the magnetic field lines around a bar magnet. List any two properties of magnetic field lines.

(a) Series arrangement is not used for connecting domestic electrical appliances in a circuit because of the following reasons:

1. In a series connection, if one electrical device stops working due to some defect, then all other devices also stop working as the whole circuit is broken.

2. In a series connection, there is only one switch is used for all electrical devices due to which they can not be turned on and off separately.

3. In a series connection, all the devices do not get the same voltage as the voltage gets divided in a series combination.

4. In a series connection, the equivalent resistance increases too much because of which the amount of current flowing becomes very small.

Explanation

Different electrical appliances in a domestic circuit are connected in parallel due not in the series because of the following reasons:

1. In a parallel connection, if one of the appliances is switched off or gets fused, there is no effect on the other appliances and they keep on operating.

2. In a parallel connection, separate switches are used for all different electrical appliances due to which they can be turned on and off separately.

3. In a parallel connection, all the electrical appliances are operated on the same voltage i.e., the mains supply voltage.

(b) 

Two properties of magnetic field lines are as follows:

1. The magnetic field lines always originate from the north pole and end at the south pole.

2. The magnetic field lines never intersect or cross each other.