Magnetic Effects Of Current Question 218
Question: A circular coil having N turns is made from a wire of length L meter. If a current I ampere is passed through it and is placed in a magnetic field of B Tesla, the maximum torque on it is [MP PMT 2001]
Options:
A) Directly proportional to N
B) Inversely proportional to N
C) Inversely proportional to $ N^{2} $
D) Independent of N
Show Answer
Answer:
Correct Answer: A
Solution:
Because $ {\tau_{\max }}=BiNA $
Þ $ \tau \propto N $ .
BETA
