Two wires `A` and `B` are of lengths `40cm` and `30cm`. A is bent into a circle of radius `r` and `B` into an arc of radius `r`. A current `i_(1)` is passed through `A` and `i_(20)` through `B`. To have the same magnetic inductions at the centre, the ratio of `i_(1):i_(2)` is

Two wires A and B are of lengths 40 cm and 30 cm. A is bent into a circle of radius r and B into an arc of radius r. A current i_(1) is passed through A and i_(2) through B. To have the same magnetic induction at the centre, the ratio of i_(1) : i_(2) is

The wires A and B are of lengths 40 cm and 30 cm. A is bent into a circle of radius r and b into an are of radius r. A current i_(1) is passed through A and i_(2) through B. To have the same magnetic inductions at the centre, the ratio of i_(1): i_(2) is

A wire of length 10cm is bent into an arc of a circle such that it subtends an angle of 1 radian at the centre. If a current of 1A is passed through the wire, the magnetic induction at the centre of the circle will be

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 B_1 and B_2 are the values of magnetic induction at the centre of the circle and the centre of the square, respectively, then the ratio B_1//B_2 is

A wire of length 'L' is bent in to an arc of a circle and found to subtentd and angle of 'theta' radians at the centre.If a current of 'I' is passed through it, the magnetic induction at the center of the circle is

A wire of length l, carrying current i, is bent in circle of radius r, then magnetic moment at centre of loop is