Magnetic Effects Of Current Question 181
Question: Four wires each of length 2.0 metres are bent into four loops P, Q, R and S and then suspended into uniform magnetic field. Same current is passed in each loop. Which statement is correct [MP PET 1995; DPMT 1999]
Options:
A) Couple on loop P will be the highest
B) Couple on loop Q will be the highest
C) Couple on loop R will be the highest
D) Couple on loop S will be the highest
Show Answer
Answer:
Correct Answer: D
Solution:
Couple of force on loop S will be maximum because for same perimeter the area of loop will be maximum and magnetic moment of loop $ =i\times A. $ So, it will also be maximum for loop S.
BETA
