Answer the following:A wire of length 10cms is bent so as to form an arc of a circle of radius 4cms.What is the angle subtended at the centre in degree?

A wire of length 5 cm is bent so as to form an arc of a circle of radius 2cm.What is the angle subtended at the centre in degree

Select and write the correct answer from the given alternatives in each of the following:The length of an arc of a circle of a radius 10 cm which subtends an angle of 45^@ at the centre is

A wire of length L carrying a current I is bent into a circle. The magnitude of the magnetic field at the centre of the circle is

Area of sector of a circle of radius 15 cm is 30 cm^2 . Find the length of the arc of the sector.

A wire of length 120 cm is bent in the form of rectangle. Find its dimensions if the area of the rectangle is maximum.