The primary winding of a transformer has 400 turns and its secondary has 100 turns. If a source of e.m.f. of 12V is applied to the primary, the secondary e.m.f. will be

Similar Questions

A cell whose internal resistance is 0.5Ω delivers a current of 4A to an external resistor,The ...

Which of the following machines does not apply the lever principle? ...

The property of the eye known as its power of accommodation is controlled by the ...

The displacement d produced in a glass block of thickness t and refractive index n when an object is...

The motion of the wheel of a bicycle moving on a smooth straight road is ...

In alternating current theory, the units of impedance, r.m.s. voltage and resonance frequency are re...

The property of a fluid that is used to determine its suitability as a lubricant is its ...

An electron of mass m and charge $\Box$ enters a uniform electric field between two metal plates P...

The phase difference between waves P and q in the diagram above is ...

A faulty thermometer registers 102.5oC t 100oC. If the thermometer has no zero hour, what will it re...