Magnetic Effects of Current / करंट का चुंबकीय प्रभाव
JEE Main & Advanced
Physics
Magnetic Effects of Current / करंट का चुंबकीय प्रभाव
Question Bank
Self Evaluation Test - Moving Charges and Mangetism
question_answer
The figure shows two long straight current carrying wire separated by a fixed distance d. The magnitude of current, flowing in each wire varies with time but the magnitude of current in each wire is equal at all times. Which of the following graphs shows the correct variation of force per unit length/between the two wires with current?
A)
B)
C)
D)
Correct Answer:
C
Solution :
[c] The force per unit length is given by \[f=\frac{{{\mu }_{0}}{{i}^{2}}}{2\pi d}\] i.e., \[f\propto {{i}^{2}}\]