When a current of 2.0A flows in the 100-turn primary of an ideal transformer, this causes 14 A to flow in the secondary. How many turns are in the secondary?A) 700B) 356C) 114D) 14E) 4

The correct option is D) 14

Explanation:

A transformer is a device used for stepping- up or stepping- down an alternating voltage. It has both primary and secondary windings. Energy is usually supplied through the primary coil and delivered through the secondary coil in a transformer. Using the equation:

Ns= lp

Np= Is

Where Ns--> number of turns in secondary coil

Np--> number of turns in primary coil

Is--> current flow in secondary coil

Ip--> current flow in primary coil.

Therefore Ns= Np Ip/Is

Substituting from the question

Ns= 100×2/14

Ns= 200/14

Ns = 14.28 which is approximately 14 turns in the secondary coil.

the working equation for the angular size is the product of the physical size and 360 degrees divided by the product of two pi and distance from earth. the minimum size would be 0.559 degrees while the maximum size would be 0.49 degrees.