Consider the situation shown in the figure. T | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) The induced electromotive force $(emf)$ in a moving conductor is given by $e = B l v$,where $B$ is the magnetic field,$l$ is the length of the con

Vedclass · Accepted Answer

Remain the same

Vedclass · Answer

(B) The induced electromotive force $(emf)$ in a moving conductor is given by $e = B l v$,where $B$ is the magnetic field,$l$ is the length of the conductor perpendicular to the velocity,and $v$ is the velocity.In this setup,the effective length $l$ of the wire that cuts the magnetic field lines is the distance between the two rails (the chord length of the wire).When the straight wire $AB$ is replaced by a semicircular wire with the same chord length,the effective length $l$ remains unchanged because the distance between the points of contact on the rails remains the same.Since $e = B l v$,and $B, l,$ and $v$ remain constant,the induced $emf$ remains the same.Consequently,the induced current $I = e / R$ also remains the same,assuming the resistance $R$ of the circuit does not change.

Consider the situation shown in the figure. The wire $AB$ is sliding on the fixed rails with a constant velocity $v$. If the wire $AB$ is replaced by a semicircular wire of the same chord length,the magnitude of the induced current will

Similar Questions

$A$ vessel is filled with an ideal gas at a pressure of $10 \ atm$ and temperature $27^\circ C$. Half of the mass of the gas is removed from the vessel and the temperature of the remaining gas is increased to $87^\circ C$. Then the pressure of the gas in the vessel will be ...... $atm$.

$100$ cells each of e.m.f. $5 \ V$ and internal resistance $1 \ \Omega$ are to be arranged so as to produce maximum current in a $25 \ \Omega$ resistance. Each row is to contain an equal number of cells. The number of rows should be

$A$ ray of light passes through an equilateral prism such that the angle of incidence is equal to the angle of emergence and each one is equal to $3/4$th the angle of the prism. The angle of deviation is (in $^{\circ}$)

The equation of the locus of $z$ such that $\left|\frac{z-i}{z+i}\right|=2$,where $z=x+iy$ is a complex number,is

The formula of sodium nitroprusside is:

Vedclass Test Series

Exam Paper Generator

Online Exam Module