Tag: physics
Questions Related to physics
How will you relate the number of turns in the primary coil of a step-down transformer to that in secondary coil ?
What is the core of the transformer is made up of?
A transformer is employed to
In a step down transformer, the number of turns in the primary is always :
A transformer changes the voltage
Statement A: In a transformer, a large alternating current at low voltage can be transformed into a small alternating current at high voltage
Statement B: Energy in current carrying coil is stored in the form of magnetic field.
Transformers are used in
A transformer works on the principle of :
An ideal transformer has $500$ and $5000$ turns in primary and secondary winding respectively. If the primary coil is connected to a $6 V$ battery then the secondary voltage is
A step down transformer reduces $220V$ to $11V$. The primary coil draws $5 A$ current and secondary coil supplies $90A$. Efficiency of the transformer will be: