List of top Physics Questions on Transformers asked in MHT CET

A current of 4 A is flowing at 230 V in the primary coil of a transformer. If the voltage produced in the secondary coil is 2300 V and 40 % of power is lost, then the current in the secondary will be

A transformer has 120 turns in the primary coil and carries 5A current. Input power is one kilowatt. To have 560 V output, the number of turns in secondary coil will be

A step down transformer has turns ratio 20:1. If 8V are applied across \(0.4 \Omega\) secondary then the primary current will be

An ideal transformer converts \(220\)V a.c. to \(3.3\) KV a.c. to transmit a power of \(4.4\) KW. If primary coil has \(600\) turns then alternating current in the secondary coil is

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