JEE Main 2019 (Online) 9th April Morning Slot | Magnetics Question 183 | Physics

JEE Main 2019 (Online) 9th April Morning Slot

MCQ (Single Correct Answer)

-1

A rigid square loop of side 'a' and carrying current I₂ is lying on a horizontal surface near a long current I₁ carrying wire in the same plane as shown in figure. The net force on the loop due to wire will be : JEE Main 2019 (Online) 9th April Morning Slot Physics - Magnetics Question 185 English

JEE Main 2019 (Online) 9th April Morning Slot Physics - Magnetics Question 185 English

Repulsive and equal to $$\mu $$₀I₁I₂/4$$\pi $$

Attractive and equal to $$\mu $$₀I₁I₂/3$$\pi $$

Repulsive and equal to $$\mu $$₀I₁I₂/2$$\pi $$

Zero

JEE Main 2019 (Online) 9th April Morning Slot

MCQ (Single Correct Answer)

-1

The magnetic field of a plane electromagnetic wave is given by :
$$$\overline B = {B_0}\widehat i\left[ {\cos (kz - \omega t)} \right] + {B_i}\widehat j\cos (kz + \omega t)$$$ B₀ = 3 × 10^–5 T and B1 = 2 × 10^–6 T.
The rms value of the force experienced by a stationary charge Q = 10^–4 C at z = 0 is closest to :

0.6 N

0.9 N

3 × 10^–2 N

0.1 N

JEE Main 2019 (Online) 9th April Morning Slot

MCQ (Single Correct Answer)

-1

A rectangular coil (Dimension 5 cm × 2.5 cm) with 100 turns, carrying a current of 3 A in the clock-wise direction is kept centered at the origin and in the X-Z plane. A magnetic field of 1 T is applied along X-axis. If the coil is tilted through 45° about Z-axis, then the torque on the coil is :

0.42 Nm

0.55 Nm

0.38 Nm

0.27 Nm

JEE Main 2019 (Online) 8th April Evening Slot

MCQ (Single Correct Answer)

-1

Two very long, straight, and insulated wires are kept at 90° angle from each other in xy-plane as shown in the figure. These wires carry currents of equal magnitude I, whose directions are shown in the figure. The net magnetic field at point P will be : JEE Main 2019 (Online) 8th April Evening Slot Physics - Magnetics Question 188 English