A transformer has N1 primary turns and N2 secondary turns. The primary coil is connected to an AC...


A transformer has {eq}N_1 {/eq} primary turns and {eq}N_2 {/eq} secondary turns. The primary coil is connected to an AC source with voltage amplitude V. The secondary coil is connected to a resistor with resistance R. Let {eq}N_1 = 120, N_2 = 50~ V, V = 200 ~V, ~and~ R = 50~ \Omega {/eq}.

Find the amplitude of the current {eq}I_2 {/eq} through the secondary coil.

A) 1.67 A

B) 16.0 A

C) 1.00 A

D) 0.50 A

Need of Transformer:

All the electronic devices are made to operate on a certain range of voltage and current, and a higher or lower power supply can be harmful to those appliances. A transformer can change the incoming power supply to the required value of the power supply.

Answer and Explanation: 1

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Given Data

  • The voltage in the primary coil is: {eq}V = 200\;{\rm{V}} {/eq}.
  • The number of primary turns is: {eq}{N_1} = 120 {/eq}.
  • The number of...

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Alternating Current: Definition, Advantages & Disadvantages


Chapter 12 / Lesson 7

Read the definition of direct and alternating current. See the advantages of AC over DC and understand why we use AC instead of DC. Know if we use AC or DC in homes.

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