Question 1: Palette 1/5

BITSAT 2025 MCQ

A parallel plate capacitor with plate area $A$ and separation between plates $d$ is charged with constant current $I$. Consider a plane surface of area $\frac{5 A}{6}$ parallel to the plates and drawn between the plates. The displacement current through area is

A

$\frac{1}{6} I$

B

$\frac{5}{6} I$

C

$6 I$

D

$\frac{6}{5} I$

Question 2: Palette 2/5

BITSAT 2023 MCQ

The electric and the magnetic field associated with an E.M. wave, propagating along the $\mathrm{Z}$-axis can be represented by

A

$\left(\mathbf{E}=E_0 \hat{\mathbf{i}}, \mathbf{B}=B_0 \hat{\mathbf{j}}\right)$

B

$\left(\mathbf{E}=E_0 \hat{k}, \mathbf{B}=B_0 \hat{\mathbf{i}}\right)$

C

$\left(\mathbf{E}=E_0 \hat{\mathbf{j}}, \mathbf{B}=B_0 \hat{\mathbf{i}}\right)$

D

$\left(\mathrm{E}=E_0 \hat{\mathrm{j}}, \mathrm{B}=B_0 \hat{\mathrm{k}}\right)$

Question 3: Palette 3/5

BITSAT 2022 MCQ

An electromagnetic wave is propagating along X-axis. At x = 1 cm and t = 18s, its electric vector |E| = 8 V/m, then the magnitude of its magnetic vector is

A

2.66 $\times$ 10^$-$8

B

3 $\times$ 10^$-$7

C

3.14 $\times$ 10^$-$8

D

3.16 $\times$ 10^$-$7

Question 4: Palette 4/5

BITSAT 2021 MCQ

Choose the correct statement.

A

The speed of light in the meta-material is $v = c|n|$.

B

The speed of light in the meta-material is $v = {c \over {|n|}}$.

C

The speed of light in the meta-material is v = c.

D

The wavelength of the light in the meta-material ($\lambda$_m) is given by $\lambda$_m = $\lambda$_air | n |.

Question 5: Palette 5/5

BITSAT 2020 MCQ

The magnetic field of a beam emerging from a fitter facing a flood light is given by

B = 10 $\times$ 10^$-$8 sin(1 $\times$ 10⁷z $-$ 3.6 $\times$ 10¹⁵t)T. The average intensity of the beam is

A

1.82 W/m²

B

1.19 W/m²

C

1.18 W/m²

D

1.17 W/m²