Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Alternating Current

Question:

Choose the incorrect statement from the following:

Options:

A transformer can produce ac power

A transformer cannot work on dc

In a transformer when ac voltage is stepped up x times, the alternating current reduces to $\frac{1}{x}$ times

A transformer cannot change the frequency of alternating current

Correct Answer:

A transformer can produce ac power

Explanation:

Transformers are used in electric circuits to change the voltage of electricity flowing in the circuit. It is used to increase the voltage or decrease current (called 'stepping up') or decrease the voltage or increase the current ('stepping down') in AC circuits. 

A transformer can neither change the frequency or Produce any Power.