Field at the centre of a circular coil of radius $r$, through which a current $I$ flows is
Field at the centre of a circular coil of radius $r$, through which a current $I$ flows is
- A
Directly proportional to $r$
- B
Inversely proportional to $I$
- C
Directly proportional to $I$
- D
Directly proportional to ${I^2}$
Similar Questions
A coil of $12$ turns made by a constant length current carrying wire. If number of turns makes $3$ then change in magnetic field produced at its centre
A coil of $12$ turns made by a constant length current carrying wire. If number of turns makes $3$ then change in magnetic field produced at its centre
Which of the field patterns given below is valid for electric field as well as for magnetic field?
Which of the field patterns given below is valid for electric field as well as for magnetic field?
- [IIT 2011]
Given below are two statements$:$
Statement $I:$ Biot-Savart's law gives us the expression for the magnetic field strength of an infinitesimal current element (IdI) of a current carrying conductor only.
Statement $II :$ Biot-Savart's law is analogous to Coulomb's inverse square law of charge $q$, with the former being related to the field produced by a scalar source, Idl while the latter being produced by a vector source, $q$. In light of above statements choose the most appropriate answer from the options given below:
Given below are two statements$:$
Statement $I:$ Biot-Savart's law gives us the expression for the magnetic field strength of an infinitesimal current element (IdI) of a current carrying conductor only.
Statement $II :$ Biot-Savart's law is analogous to Coulomb's inverse square law of charge $q$, with the former being related to the field produced by a scalar source, Idl while the latter being produced by a vector source, $q$. In light of above statements choose the most appropriate answer from the options given below:
- [NEET 2022]
Find magnetic field at $O$
Find magnetic field at $O$
A circular loop of radius $r$ is carrying current I A. The ratio of magnetic field at the centre of circular loop and at a distance $r$ from the center of the loop on its axis is:
A circular loop of radius $r$ is carrying current I A. The ratio of magnetic field at the centre of circular loop and at a distance $r$ from the center of the loop on its axis is:
- [JEE MAIN 2023]