AP EAMCET · PHYSICS · Magnetic Effects of Current
The magnitude of magnetic field at \(O\) due to a current carrying loop as shown in the figure is, where \(O\) is the centre of two circular portions with radii \(1 \mathrm{~cm}\) and \(2 \mathrm{~cm}\) respectively is
(Take, the value of current \(I=\frac{1.2}{\pi} \mathrm{A}\) )
- A 10 ñT
- B \(0.1 \mathrm{nT}\)
- C \(100 \mu \mathrm{T}\)
- D \(1 \mathrm\mu{T}\)
Answer & Solution
Correct Answer
(D) \(1 \mathrm\mu{T}\)
Step-by-step Solution
Detailed explanation
Wire lengths \(a b\) and \(c d\) does not produces any field at \(O\) as this point lies an axis of wires. Arc \(b c\) produces an inward \(\otimes\) magnetic field given by \(B_1=\frac{\mu_0 I}{2 R_1} \times \frac{\theta}{360^{\circ}}\)…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from PHYSICS
- Three rods each of length \(l\) and cross sectional area \(A\) joined in series between two heat reservoirs as shown in the figure. Their conductivities are \(2 K, K\) and \(\frac{K}{2}\), respectively. Assuming that the conductors are insulated from surroundings, the temperatures \(T_1\) and \(T_2\) of the junctions in steady state condition are respectively.
AP EAMCET 2019 Hard - A part of a circuit is shown in the figure. The ratio of the potential differences between the points A and C, and the points D and E is
AP EAMCET 2025 Medium - Three infinitely long charged non-conducting sheets are placed as shown in the figure. The electric field at point ' \(\mathrm{P}\) ' is ( \(\sigma\) - charge density, \(\epsilon_0\) - permittivity of free space)
AP EAMCET 2017 Medium - At a temperature of \(314 \mathrm{~K}\) and a pressure of \(100 \mathrm{kPa}\), the speed of sound in a gas is \(1380 \mathrm{~ms}^{-1}\). The radius of each gas molecule is \(0.5 Å\). The frequency of sound at which the wavelength of sound wave in the gas becomes equal to the mean free path of the gas molecules is \(\left(\right.\) Boltzmann constant \(=1.38 \times 10^{-23} \mathrm{JK}^{-1}\).)AP EAMCET 2019 Hard
- In Young's double slit experiment the slits are \(3 \mathrm{~mm}\) apart and are illuminated by light of two wavelengths \(3750 Å\) and \(7500 Å\). The screen is placed at \(4 \mathrm{~m}\) from the slits. The minimum distance from the common central bright fringe on the screen at which the bright fringe of one interference pattern due to one wavelength coincide with the bright fringe of the other isAP EAMCET 2022 Medium
- Two point sources and separated by a distance emit light waves of wavelength in phase. A circular wire of radius is placed around the sources as shown in figure, then ( is the centre of the circle and )
AP EAMCET 2018 Medium
More PYQs from AP EAMCET
- If a function \(f\) defined by
\(f(x)=\left\{\begin{array}{c}\frac{1-\sqrt{2} \sin x}{\pi-4 x}, \text { if } x \neq \frac{\pi}{4} \\ k, \text { if } x=\frac{\pi}{4}\end{array}\right.\) \(x=\frac{\pi}{4}\), then \(k=\)AP EAMCET 2018 Easy - The force required to stop a body of mass \(10 \mathrm{~kg}\) moving along a straight line path with a velocity of \(10 \mathrm{~ms}^{-1}\) in a time of \(10 \mathrm{~s}\) isAP EAMCET 2023 Medium
- If \(A\) and \(B\) are two independent events such that \(P(A)=0.3,
P(B)=x\) and \(P(A \cup B)=0.44\), then \(x=\)AP EAMCET 2022 Easy - A short bar magnet placed with its axis at \(45^{\circ}\) with a uniform external magnetic field of \(28.3 \times 10^{-3} \mathrm{~T}\) experiences a torque of magnitude equal to \(3.6 \times 10^{-5} \mathrm{~J}\). The magnitude of magnetic moment of the magnet is nearlyAP EAMCET 2022 Easy
- In the random experiment of tossing two unbiased dice let \(E\) be the event of getting the sum 8 and \(F\) be the event of getting even numbers on both the dice. Then :
I. \(P(E)=\frac{7}{36}\)
II. \(P(F)=\frac{1}{3}\)
Which of the following is a correct statement?AP EAMCET 2006 Hard - A function from \(\mathrm{A}=\{x:-1 \leq x \leq 1\}\) to itself which is not a bijection isAP EAMCET 2017 Medium