help6

Question

Answer 1

Step 1:

1.1.1)

Two capacitors are in series.

Substitute  microfarads,  microfarads.

Total capacitance is 3.1578 microfarads.

Solution :

Total capacitance is 3.1578 microfarads.

Answer 2

Step 1:

(1.1.2)

From (1.1.1), total capacitance is 3.1578 microfarads.

Find the potential difference across each capacitance.

Now find the total charge .

.

Substitute and in the total charge.

The total charge is

Find the voltage across the capacitance .

Find the voltage across the capacitance .

The voltage across the capacitors  are and .

Solution :

The voltage across the capacitor is .

The voltage across the capacitor is .

Answer 3

Step 1:

(1.2)

In transformer, we supply alternating current  in the primary, this alternating current produces alternating magnetizing flux in the core and as this flux links with secondary winding, there will be induced voltage in secondary, resulting current to flow through the load connected with it.

Some of the alternating fluxes of transformer; may also link with other conducting parts like steel core or iron body of transformer etc.

As alternating flux links with these parts of transformer, there would be a locally induced emf.

Due to these emfs, there would be currents which will circulate locally at that parts of the transformer.

These circulating current will not contribute in output of the transformer and dissipated as heat.

This type of energy loss is called eddy current loss of transformer.