emi

Question

A coil ACD of N turns and radius R carries a current I Amp and is placed on a horizontal table.K is a very small horizontal conducting ring of radius r placed at a distance Y frm the centre of the coil vertically above the coil ACD .Find an expression for the EMF estabilished when the ring K is allowed to fall freely.Express the emf in terms of instantaneous speed v and height Y.

ROSHAN MUJEEB · Accepted Answer

Solution :B=&mu;0IR2N2[R2+y2]3/2B=&mu;0IR2N2[R2+y2]3/2&epsilon;=&minus;dϕdt=&minus;AdBdt=&minus;&pi;r2dBdt&epsilon;=-dϕdt=-AdBdt=-&pi;r2dBdt...(1)heredBdt=&minus;&mu;0IR2N2&times;321[R2+y2]5/2&times;2y&times;dydtdBdt=-&mu;0IR2N2&times;321[R2+y2]5/2&times;2y&times;dydt=&minus;3&mu;0IR2N2yv[R2+y2]5/2=-3&mu;0IR2N2yv[R2+y2]5/2put this value in eq. (i) and get Ans.

Magnetism> emi...

Shlok Waikar , 11 Years ago

ROSHAN MUJEEB

Provide a better Answer & Earn Cool Goodies

LIVE ONLINE CLASSES

Ask a Doubt

Four long co-axial thin walled cylindrical conductor A, B, C and D have radii R. 2R 3R and 4R respectively. A and C carry current I and 31 respectively to plane of paper on the other hand, B and D carry and 41 respectively outward to plane of paper. Then 21

Magnetism

I need solution of these questions.............................Magnetic effect of current

Magnetism

A freely suspended iron rod does not point at N-S directions alwalys .why

Magnetism

What is magnetic entropy change? For my knowledge, I know entropy is randomness or disorder. So here that magnetic refers to the magnetic dipole moments?

Magnetism

Derive the relation between magnetic field intensity (H) and magnetization (M) for a magnetic material placed in a magnetizing field.

Magnetism

Magnetism> emi...

Shlok Waikar , 11 Years ago

ROSHAN MUJEEB

Provide a better Answer & Earn Cool Goodies

LIVE ONLINE CLASSES

Ask a Doubt

Other Related Questions on Magnetism

Four long co-axial thin walled cylindrical conductor A, B, C and D have radii R. 2R 3R and 4R respectively. A and C carry current I and 31 respectively to plane of paper on the other hand, B and D carry and 41 respectively outward to plane of paper. Then 21

Magnetism

I need solution of these questions.............................Magnetic effect of current

Magnetism

A freely suspended iron rod does not point at N-S directions alwalys .why

Magnetism

What is magnetic entropy change? For my knowledge, I know entropy is randomness or disorder. So here that magnetic refers to the magnetic dipole moments?

Magnetism

Derive the relation between magnetic field intensity (H) and magnetization (M) for a magnetic material placed in a magnetizing field.

Magnetism