Question

In: Physics

True or False The magnetic field at a radial distance R from a current element i...

True or False

The magnetic field at a radial distance R from a current element i dl is a maximum when the current element direction is at right angles to the radial line.

Induced electric field lines are continuous, i.e. having no beginning or ending points.

An arbitary shaped Amperian loop through which no currents pass may itself pass through a magnetic field.

Induced electric field lines have a beginning and end point.

The negative sign in Faraday's Law (Lenz's Law) implies that the induced EMF is in opposition to any changes in magentic flux.

The current induced in a copper wire coil by a changing magnetic field is dependent of the number of turns in the coil.

The negative sign in Faraday's Law (Lenz's Law) implies that the induced EMF is in opposition to any changes in magentic flux.

Solutions

Expert Solution

The magnetic field at a radial distance R from a current element i dl is a maximum when the current element direction is at right angles to the radial line.

as B = idl X R = idl*R*sin(theta)

B is maximum for theta = 90 degree

hence , TRUE

Induced electric field lines are continuous, i.e. having no beginning or ending points.

TRUE , the induced electric field lines are continuous

An arbitary shaped Amperian loop through which no currents pass may itself pass through a magnetic field.

TRUE , if the field is constant

Induced electric field lines have a beginning and end point.

FALSE


The negative sign in Faraday's Law (Lenz's Law) implies that the induced EMF is in opposition to any changes in magentic flux.

TRUE

The current induced in a copper wire coil by a changing magnetic field is dependent of the number of turns in the coil.

TRUE , as current is dependent on the change in flux which in turn is dependent on the number of turns

The negative sign in Faraday's Law (Lenz's Law) implies that the induced EMF is in opposition to any changes in magentic flux.

TRUE

genius_generous answered 1 year ago
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