Figure shows three cases: in all cases the circular part has radius r and straight one are infinetly long. For the same current the ratio of field B at centre P in the three cases B1 ; B2 : B3 is
Sahay Sir > Question Answers > Figure shows three cases: in all cases the circular part has radius r and straight one are infinetly long. For the same current the ratio of field B at centre P in the three cases B1 ; B2 : B3 is
Two very long straight parallel wires carry steady currents i and 2i in opposite directions. The distance between the wires is d. At a certain instant of time a point charge q is at a point equidistant from the two wires in the plane of the wires. Its instantaneous velocity v→ is perpendicular to this plane. The magnitude of the force due to the magnetic field acting on t he charge at this instant is
17
Oct
Two very long straight parallel wires carry steady currents i and 2i in opposite directions. The distance between the wires is d. At a certain instant of time a point charge q is at a point equidistant from the two wires in the plane of the wires. Its instantaneous velocity v→ is perpendicular to this [...]
Two identical wires A and B have the same length l and carry the same current I. Wire A is bent into a circle of radius R and wire B is bent to form a square of side a. If B1 and B2 are the values of magnetic induction at the centre of the circle and the centre of the square, respectively, then the ratio B1/B2 is
17
Oct
Two identical wires A and B have the same length l and carry the same current I. Wire A is bent into a circle of radius R and wire B is bent to form a square of side a. If B1 and B2 are the values of magnetic induction at the centre of the circle [...]
A coaxial cable consists of a thin inner conductor fixed along the axis of a hollow outer conductor. The two conductor carry equal currents in opposite directions. Let B1andB2 be the magnetic fields in the region between the conductors and outside the conductor, respectively. Then,
17
Oct
A coaxial cable consists of a thin inner conductor fixed along the axis of a hollow outer conductor. The two conductor carry equal currents in opposite directions. Let B1andB2 be the magnetic fields in the region between the conductors and outside the conductor, respectively. Then, Figure shows three cases: in all cases the circular part [...]
Two concentric coils each of radius equal to 2 π cm are placed at right angles to each other 3 ampere and 4 ampere are the currents flowing in each coil respectively. The magnetic induction in weber/m^2 at the centre of the coils will be (μ0 = 4π × 10^−7 Wb/A.m)
17
Oct
Two concentric coils each of radius equal to 2 π cm are placed at right angles to each other 3 ampere and 4 ampere are the currents flowing in each coil respectively. The magnetic induction in weber/m^2 at the centre of the coils will be (μ0 = 4π × 10^−7 Wb/A.m) Figure shows three cases: [...]
The field due to a wire of n turns and radius r which carries a current I is measured on the axis of the coil at a small distance h from the center of the coil. This is smaller than the field at the centre by the fraction:
17
Oct
The field due to a wire of n turns and radius r which carries a current I is measured on the axis of the coil at a small distance h from the center of the coil. This is smaller than the field at the centre by the fraction: Figure shows three cases: in all cases [...]
Figure shows three cases: in all cases the circular part has radius r and straight one are infinetly long. For the same current the ratio of field B at centre P in the three cases B1 ; B2 : B3 is
17
Oct
Figure shows three cases: in all cases the circular part has radius r and straight one are infinetly long. For the same current the ratio of field B at centre P in the three cases B1 ; B2 : B3 is Figure shows three cases: in all cases the circular part has radius r and [...]