In a compact coil of 50 turns, the current strength is 10A and the radius of the coil is `25xx10^2` meter. Find the magnitude of the magnetic field at its centre.

In a compact coil of 50 turns, the current strength is 10 A and the radius of the coil is 25xx10^(-2)m . Find the magnitude of the magnetic field at its centre.

If we double the radius of a current carrying coil keeping the current unchanged, the magnetic field at its centre will

Two indentical circular coils, P and Q each of radius R, carrying currents 1A and sqrt(3)A resepectively. Are placed concentrically and perpendicular to each other laying in the XY and Yz planes. Find the magnitude and direction of the net magnetic field at the centre of the coils.

The radii of two circular coils are 5 cm and 10 cm and their number of turns are 40 and 100, respectively. The coils are coplanar and concentric and a 4 A current is sent through the first coil. Find the current and its direction through the second coil so that the magnetic field at thier centre becomes zero?

Two concentric but mutually perpendicular conduction coils are carrying current 3A and 4A, respectively . if the radius of each coil be 2pi,cm . What will be the magnetic induction at the centre of the coils ? (mu_(0)=4pixx10^(-7)Wb*A^(-1)m^(-1)) .

A straight wire is used ot form a semi-circular wire of radius 2cm. IF a current I=10A is passing through the wire,then find the magnitude and direction of magnetic induction at the centre of the semicircle.

A vertical circular coil of radius 0.1 m and of 10 turns caries a steady current. When the plane of the coil is normal to the magnetic meridian a neutral point is observed at the centre of the coil . If B_(H)=0.314xx10^(-4)T What is the magnitude of the current flowing through the coil?