AP EAPCET 2024 - 19th May Evening Shift | Electromagnetic Induction Question 7 | Physics

Magnetic field at a distance of $r$ from $Z$-axis is $B=B_0$ $r t \hat{\mathbf{k}}$ present in the region. $B_0$ is constant and $t$ is time. The magnitude of induced electric field at a distance of $r$ from $Z$-axis is

$\frac{B_0 r^3}{3}$

$\frac{2 \pi B_0 r}{3}$

$\frac{B_0 r^2}{2 \pi}$

$\frac{B_0 r^2}{3}$

AP EAPCET 2024 - 18th May Morning Shift

MCQ (Single Correct Answer)

-0

If the current through an inductor increases from 2A to 3A. The magnetic energy stored in the inductor increases by

$125 \%$

$225 \%$

$50 \%$

$75 \%$

AP EAPCET 2022 - 5th July Morning Shift

MCQ (Single Correct Answer)

-0

A circular loop of wire of radius 14 cm is placed in magnetic field directed perpendicular to the plane of the loop. If the field decreases at a steady rate of $$0.05 \mathrm{~Ts}^{-1}$$ in some interval, then the magnitude of the emf induced in the loop is

2.08 mV

3.08 mV

2.16 mV

3.24 mV

AP EAPCET 2022 - 4th July Evening Shift

MCQ (Single Correct Answer)

-0

A circular coil has 100 turns, radius 3 cm and resistance $$4 \Omega$$. This coil is co-axial with a solenoid of 200 turns/$$\mathrm{cm}$$ and diameter 4 cm . If the solenoid current is decreased from 2 A to zero in 0.04 s , then the current induced in the coil is

$$4 \pi^2 \mathrm{~mA}$$

$$8 \pi \mathrm{mA}$$

30.3 mA

45.5 mA

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