(C) Given: Number of turns $N = 100$,Area $A = 0.10 \; m^2$,Frequency $\nu = 0.5 \; Hz$,Magnetic field $B = 0.01 \; T$.The maximum induced electromoti

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(C) Given: Number of turns $N = 100$,Area $A = 0.10 \; m^2$,Frequency $\nu = 0.5 \; Hz$,Magnetic field $B = 0.01 \; T$.The maximum induced electromotive force (voltage) $\varepsilon_0$ in a rotating coil is given by the formula $\varepsilon_0 = N B A \omega$,where $\omega = 2 \pi \nu$.Substituting the values:$\varepsilon_0 = 100 \times 0.01 \times 0.10 \times (2 \times 3.14 \times 0.5)$$\varepsilon_0 = 1 \times 0.10 \times 3.14$$\varepsilon_0 = 0.314 \; V$.Thus,the maximum voltage generated in the coil is $0.314 \; V$.

Class 12 Physics Electromagnetic Induction Motional EMI (Induced Parameter)

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Kamla peddles a stationary bicycle. The pedals of the bicycle are attached to a $100$ turn coil of area $0.10 \; m^2$. The coil rotates at half a revolution per second and it is placed in a uniform magnetic field of $0.01 \; T$ perpendicular to the axis of rotation of the coil. What is the maximum voltage (in $V$) generated in the coil?

A
$1.56$
B
$0.942$
C
$0.314$
D
$0.628$

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Electromagnetic Induction

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Motional EMI (Induced Parameter)

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$A$ conducting rod $AB$ moves parallel to the $X-$ axis in a uniform magnetic field,which is directed perpendicular to the plane of motion (outwards). The end $A$ of the rod gets:

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$A$ conducting rod,with a resistor of resistance $R$,is pulled with constant speed $v$ on a smooth conducting rail as shown in the figure. $A$ constant magnetic field $B$ is directed into the page. If the speed of the bar is doubled,by what factor does the rate of heat dissipation across the resistance $R$ change?

KVPY 2020

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

EasyAP EAMCET 2020

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