The magnitude of the e.m.f. across the secondary of a transformer does not depend on

Voltage in the secondary coil of a transfomer does not depend upon

Maximum efficiency of a transformer depends on

The number of turns in the primary and secondary coils of a transformer are 200 and 800 respectively. If the voltage developed across the secondary is 240 V, then the potential difference across each turn of the primary will be

The induced e.m.f. in a coil does not depend on

The magnitude of induced e.m.f. in a conductor, depends upon

The EMF of an electrolytic cell does not depend upon:

A transformer is an electrical device which is used for changing the a.c. voltage. It is based on the phenomenon of mutual induction. It can be shown that (E_(s))/(E_(P)) = (I_(P))/(I_(s)) = (n_(s))/(n_(P)) = K Where the symbols have their standard meaning. For a step up transformer, K gt 1 and for a step down transformer, K lt 1 . The above relations are on the assumption that efficiency of transformer is 100% . In fact, efficiency eta = ("output power")/("input power") = (E_(s) I_(s))/(E_(P) I_(P)) The number of turns in the primary and secondary coils of a transformer are 2000 and 50 respectively. The primary coil is connected to main supply of 120 V and secondary to a night bulb 0.6 Omega . The efficiency of transformer is 80% . Voltage across the secondary coil of transformer is:

Assertion : We use a thick wire in the secondary of a step down transformer to reduce the production heat . Reason : When the plane of the armature is parallel to the lines of force of magnetic field , the magnitude of induced e.m.f. is maximum .

The number of the turns in the primary coil of a transformer is 10 times than the same in the secondary coil . If the voltage across the primary is 20 V then find the voltage across the secondary .