JEE Main 2018 (Online) 15th April Morning Slot | Alternating Current and Electromagnetic Induction Question 182 | Physics

JEE Main 2018 (Online) 15th April Morning Slot

MCQ (Single Correct Answer)

-1

A monochromatic beam of light has a frequency $$v = {3 \over {2\pi }} \times {10^{12}}Hz$$ and is propagating along the direction $${{\widehat i + \widehat j} \over {\sqrt 2 }}.$$
It is polarized along the $$\widehat k$$ direction. The acceptable form for the magnetic field is :

JEE Main 2018 (Online) 15th April Morning Slot Physics - Alternating Current and Electromagnetic Induction Question 188 English Option 1

JEE Main 2018 (Online) 15th April Morning Slot Physics - Alternating Current and Electromagnetic Induction Question 188 English Option 2

JEE Main 2018 (Online) 15th April Morning Slot

MCQ (Single Correct Answer)

-1

An ideal capacitor of capacitance $$0.2\,\mu F$$ is charged to a potential difference of $$10$$ $$V.$$ The charging battery is then disconnected. The capacitor is then connected to an ideal inductor of self inductance $$0.5$$ $$mH.$$ The current at a time when the potential difference across the capacitor is $$5$$ $$V,$$ is :

$$0.34\,\,A$$

$$0.25\,\,A$$

$$0.17\,\,A$$

$$0.15\,\,A$$

JEE Main 2017 (Online) 9th April Morning Slot

MCQ (Single Correct Answer)

-1

A sinusoidal voltage of peak value 283 V and angular frequency 320/s is applied to a series LCR circuit. Given that R=5 $$\Omega $$, L=25 mH and C=1000 $$\mu $$F. The total impedance, and phase difference between the voltage across the source and the current will respectively be :

10 $$\Omega $$ and tan^$$-$$1 $$\left( {{5 \over 3}} \right)$$

$$7\,\Omega $$ and 45^o

$$10\,\Omega $$ and tan^$$-$$1$$\left( {{8 \over 3}} \right)$$

$$7\,\Omega $$ and tan^$$-$$1$$\left( {{5 \over 3}} \right)$$

JEE Main 2017 (Online) 9th April Morning Slot

MCQ (Single Correct Answer)

-1

The electric field component of a monochromatic radiation is given by

$$\overrightarrow E $$ = 2 E₀ $$\widehat i$$ cos kz cos $$\omega $$t

Its magnetic field $$\overrightarrow B $$ is then given by :

$${{2{E_0}} \over c}$$ $$\widehat j$$ sin kz cos $$\omega $$t

$$-$$ $${{2{E_0}} \over c}$$ $$\widehat j$$ sin kz sin $$\omega $$t

$${{2{E_0}} \over c}$$ $$\widehat j$$ sin kz sin $$\omega $$t

$${{2{E_0}} \over c}$$ $$\widehat j$$ cos kz cos $$\omega $$t

PREVIOUS NEXT