Home
Class 12
PHYSICS
A transformer is an electrical device wh...

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 trasnformer,`K gt 1` and for a step down transformer, `K lt 1`. The above relations are on the assumption that efficiency to transformer is `100%` . In fact, efficiency
`eta = ("outpu 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 ohm`. The efficiency of transfomer is `80%`
Voltage across the secondary of transformer is

Promotional Banner

Similar Questions

Explore conceptually related problems

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:

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 ohm . The efficiency of transformer is 80% . Current in night bulb is:

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% . Current in primary coil is:

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% . Power in primary coil is:

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 to 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% . Power in secondary coil is:

What is step up transformer ? How it differs from step down transformer ?

A transformer steps up or steps down

What is step-up and step-down transformer?

What are step-up and step-down transformers ?