A transformer operates from 240V ac supply to give an output of 8 V for ringing a door bell. If the primary coil
has 3000 turns then no. of turns in the secondary coil is:
b. 100
c. 50
d. 240
a. 1000
Answers
Answered by
1
Answer:
100
Explanation:
Its quite simple.
The basic principle is electro-magnetic induction.If we increase the number of turns in the secondary coil we get a higher voltage , if we decrease them then we get
lower voltage.
Formula is : input voltage/output voltage=no. of turns in primary coil/no.of turns in secondary coil.
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