The correct answer is (D) : \(emf=10mV\)
\(EMF=\frac{d\phi}{dt}=\frac{BA-0}{t}\)
\(A=\pi r^2=\pi(\frac{0.1^2}{\pi})=0.01\)
B=0.5
\(EMF=\frac{(0.5)(0.01)}{0.5}=0.01V=10mV\)
A square shaped coil of area $70\, cm ^2$ having $600$ turns rotates in a magnetic field of $04$ wbm $^{-2}$, about an axis which is parallel to one of the side of the coil and perpendicular to the direction of field If the coil completes $500$ revolution in a minute, the instantaneous emf when the plane of the coil is inclined at $60^{\circ}$ with the field, will be ___ V. (Take \(\pi = \frac{22}{7}\))
Sample | Van't Haff Factor |
---|---|
Sample - 1 (0.1 M) | \(i_1\) |
Sample - 2 (0.01 M) | \(i_2\) |
Sample - 3 (0.001 M) | \(i_2\) |
Electromagnetic Induction is a current produced by the voltage production due to a changing magnetic field. This happens in one of the two conditions:-
The electromagnetic induction is mathematically represented as:-
e=N × d∅.dt
Where