True or False The magnetic field at a radial distance R from a current element i
ID: 1265329 • Letter: T
Question
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.
Explanation / Answer
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
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