Home
Class 12
PHYSICS
Two coplanar concentric circular wires m...

Two coplanar concentric circular wires made of same material have radius `R_(1)` and `R_(2) (= 2R_(1))`. The wires carry current due to identical source of emf having no internal resistance. Find the ratio of radii of cross section of the two wires if the magnetic induction field at the centre of the circle is zero.

Promotional Banner

Similar Questions

Explore conceptually related problems

Two circular coils are made of two identical wires of same length and carry same current. If the number of turns of the two coils are 4 and 2, then the ratio of magnetic induction at the centres will be

Two circular coils are made of two identical wires of same length and carry same current. If the number of turns of the two coils are 4 and 2, then the ratio of magnetic induction at the centres will be

Two circular coils are made of two identical wires of the same length. If the number of turns in the two coils are 4 and 2, then the ratio of magnetic inductions at the centre will be

Two wires made of same material have their length are in the ratio 1:2 and their masses in the ratio 3:16 . The ratio of resistance of two wires is

A wire loop formed by joining two semicircular wires of radii R_1 and R_2 carries a current I as shown in figure. Find the magnetic field induction at the centre O.

Two wires of different materials have resistances in the ratio 4 : 3 , lengths in the ratio 2 : 1 but have same radii of cross-section. Compare their resistivities.