List of top Physics Questions on Transformers asked in MHT CET

A step-down transformer has a turns ratio of $20 : 1$. If $8\text{ V}$ is applied across a $0.4\ \Omega$ secondary load, then the primary current will be

A step-down transformer is used to reduce the main supply from $V_1$ volt to $V_2$ volt. The primary coil draws a current $I_1$ A and the secondary coil draws $I_2$ A ($I_1 \lt I_2$). The ratio of input power to output power is

A step up transformer operates on $220\text{ V}$ and supplies current of $2\text{ A}$. The ratio of primary and secondary windings is $1 : 20$. The current in the primary is

In a step up transformer, which one of the following statements is correct?

In an ideal step down transformer, out of the following quantities, which quantity increases in the secondary coil?

The alternating e.m.f. induced in the secondary coil of a transformer is mainly due to