मराठी

Name two factors on which the magnitude of an induced e.m.f. in the secondary coil depends. - Physics

Advertisements
Advertisements

प्रश्न

Name two factors on which the magnitude of an induced e.m.f. in the secondary coil depends.

अति संक्षिप्त उत्तर
Advertisements

उत्तर

The magnitude of e.m.f. induced in the secondary coil depends on the following two factors:

  1. The ratio of the number of turns in the secondary coil to the number of turns in the primary coil (i.e., turns ratio).
  2. The magnitude of e.m.f applied in the primary coil.
shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
2013-2014 (March) Science Paper 1

संबंधित प्रश्‍न

A power transmission line feeds input power at 2200 V to a step-down transformer with its primary windings having 300 turns. Find the number of turns in the secondary to get the power output at 220 V.


Describe briefly, with the help of labelled diagram, working of a step-up transformer.

A step-up transformer converts a low voltage into high voltage. Does it not violate the principle of conservation of energy? Explain.


An a.c generator generates an emf 'ε' where ε = 314 Sin (50πt) volt. Calculate the frequency of emf ε.


Applying e.m. f to primary coil is 210 V. If the number of turns in primary coil is 200 turns and that of in secondary coil is 20 turns, then find out the output voltage. Name the type of transformer.


The primary of a transformer has 40 turns and works on 100 V and 100 W. Find a number of turns in the secondary to step up the voltage to 400 V. Also calculate the current in the secondary and primary.


A transformer is employed to ______.

The transformer voltage induced in the secondary coil of a transformer is mainly due to ______.

An iron rod of 0.2 cm2 cross-sectional area is subjected to a magnetising field of 1200 Am-1. If the susceptibility of iron is 599, then the magnetic flux produced is ______.


The self-inductance of a closely wound coil of 200 turns is 10 mH. Determine the value of magnetic flux through the cross-section of the coil when the current passing through the coil is 4 mA.


A 12 V, 60 W lamp is connected to 220 V AC via an ideal transformer. Find the primary current.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×