AP EAPCET 2024 - 21th May Morning Shift | Electromagnetic Induction Question 1 | Physics

$X$ and $Y$ are two circuits having coefficient of mutual inductance 3 mH and resistance $10 \Omega$ and $4 \Omega$ respectively. To have induced current $60 \times 10^{-4} \mathrm{~A}$ in circuit $Y$, the amount of current to be changed in circuit $X$ in 0.02 s is

1.6 A

0.16 A

0.32 A

3.2 A

AP EAPCET 2024 - 20th May Evening Shift

MCQ (Single Correct Answer)

-0

The ratio of the number of turns per unit length of two solenoids $A$ and $B$ are 1:3 and the lengths of $A$ and $B$ are in the ratio $1: 2$. If the two solenoids have same cross-sectional area, the ratio of the self-inductances of the solenoids $A$ and $B$ is

$1: 12$

$1: 6$

$1: 18$

$1: 9$

AP EAPCET 2024 - 19th May Evening Shift

MCQ (Single Correct Answer)

-0

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

$125 \%$

$225 \%$

$50 \%$

$75 \%$

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