TG EAPCET 2025 (Online) 2nd May Morning Shift | Electromagnetic Induction Question 7 | Physics

The plane of a circular coil of resistance $7.5 \Omega$ is placed perpendicular to a uniform magnetic field. The flux $\phi$ (in weber) through the coil varies with time $t$ (in second) as $\phi=2 t^2+3 t-2$. The induced power in the coil at time $t=3 \mathrm{~s}$ is

7.5 W

15 W

30 W

20 W

TG EAPCET 2024 (Online) 11th May Morning Shift

MCQ (Single Correct Answer)

-0

The energy stored in a coil of inductance 80 mH carrying a current of 2.5 A is

1.25 J

0.75 J

0.25 J

0.50 J

TG EAPCET 2024 (Online) 10th May Evening Shift

MCQ (Single Correct Answer)

-0

The mutual inductance of two coils is 8 mH . The current in one coil changes according to the equation $I=12 \sin 100 t$, where $I$ is in ampere and $t$ is time in second. The maximum value of emf induced in the second coil is

9.6 V

4.8 V

3.2 V

12.8 V

TG EAPCET 2024 (Online) 10th May Morning Shift

MCQ (Single Correct Answer)

-0

A circular coil of area $200 \mathrm{~cm}^2$ and 50 turns is rotating about its vertical diameter with an angular speed of $\theta$ $40 \mathrm{rads}^{-1}$ in a uniform horizontal magnetic field of magnitude $2 \times 10^{-2} \mathrm{~T}$. The maximum emf induced in the coil is

1.2 V

0.8 V

0.6 V

0.3 V

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