JEE Mains · Physics · STD 12 -6. Electromagnetic induction
A conducting circular loop made of a thin wire, has area \(3.5 \times 10^{-3}\, m^2\) and resistance \(10\,\Omega \). It is placed perpendicular to a time dependent magnetic field \(B(t) = (0.4\,T)\, sin\, (50\, \pi t)\). The field is uniform in space. Then the net charge flowing through the loop during \(t = 0\, s\) and \(t = 10\, ms\) is close to.......\(mC\)
- A \(14\)
- B \(7\)
- C \(21\)
- D \(140\)
Answer & Solution
Correct Answer
(D) \(140\)
Step-by-step Solution
Detailed explanation
\({\text{B}}({\text{t}}) = 0.4\sin \left( {50\pi \times {{10}^{ - 2}}} \right)\) \( = 0.4\sin \left( {\frac{{50\pi }}{{100}}} \right) = 0.4\) \(\Delta q = \frac{{ - \Delta {\text{Q}}}}{{\text{R}}} = \frac{{\Delta {\text{Q}}}}{{\text{R}}}\)…
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
- A coil is placed in a magnetic field \(\overrightarrow{{B}}\) as shown below: A current is induced in the coil because \(\overrightarrow{{B}}\) is:
JEE Mains 2021 Medium - The rain drop of mass \(1\) g, starts with zero velocity from a height of \(1\) km. It hits the ground with a speed of \(5\) m/s. The work done by the unknown resistive force is _______ J. (take \(g = 10\) m/s\(^2\))JEE Mains 2026 Medium
- Curved surfaces of a plano-convex lens of refractive index \(\mu_{1}\) and a plano-concave lens of refractive index \(\mu_{2}\) have equal radius of curvature as shown in figure. Find the ratio of radius of curvature to the focal length of the combined lenses.
JEE Mains 2021 Hard - Two identical cells each of emf \(1.5\,V\) are connected in series across a \(10\,\Omega\) resistance. An ideal voltmeter connected across \(10\,\Omega\) resistance reads \(1.5\,V\). The internal resistance of each cell is \(......\Omega\).JEE Mains 2023 Medium
- A child stands on the edge of the cliff \(10\,m\) above the ground and throws a stone horizontally with an initial speed of \(5\,ms ^{-1}\). Neglecting the air resistance, the speed with which the stone hits the ground will be \(..........ms ^{-1}\) (given, \(g =10\,ms ^{-2}\))JEE Mains 2023 Medium
- Red light differs from blue light as they have :JEE Mains 2021 Medium
More PYQs from JEE Mains
- Let \(A =\{1,2,3,4,5,6,7\}\) and \(B =\{3,6,7,9\}\). Then the number of elements in the set \(\{ C \subseteq A : C \cap B \neq \phi\}\) isJEE Mains 2022 Medium
- One end of a massless spring of spring constant \(k\) and natural length \(l_{0}\) is fixed while the other end is connected to a small object of mass \(m\) lying on a frictionless table. The spring remains horizontal on the table. If the object is made to rotate at an angular velocity \(\omega\) about an axis passing through fixed end, then the elongation of the spring will beJEE Mains 2022 Medium
- Let the equation of two diameters of a circle \(x ^{2}+ y ^{2}\) \(-2 x +2 fy +1=0\) be \(2 px - y =1\) and \(2 x + py =4 p\). Then the slope \(m \in(0, \infty)\) of the tangent to the hyperbola \(3 x^{2}-y^{2}=3\) passing through the centre of the circle is equal to \(......\)JEE Mains 2022 Hard
- A disc of mass \(1\,kg\) and radius \(R\) is free of rotate about a horizontal axis passing through its centre and perpendicular to the plane of disc. A body of same mass as that of disc is fixed at the highest point of the disc. Now the system is released, when the body comes to the lowest position, its angular speed will be \(4 \sqrt{\frac{x}{3 R}}\) rad s\(^{-1}\) where \(x=\) \(\left( g =10\,ms ^{-2}\right)\)JEE Mains 2022 Hard
- The foot of perpendicular from the origin \(O\) to a plane \(P\) which meets the co-ordinate axes at the points \(A, B, C\) is \((2, a, 4), a \in N\). If the volume of the tetrahedron \(OABC\) is \(144\) unit \(^3\), then which of the following points is \(NOT\) on \(P\) ?JEE Mains 2023 Hard
- Heat is given to an ideal gas in an isothermal process. \(A.\) Internal energy of the gas will decrease. \(B.\) Internal energy of the gas will increase. \(C.\) Internal energy of the gas will not change. \(D.\) The gas will do positive work. \(E.\) The gas will do negative work. Choose the correct answer from the options given below :JEE Mains 2023 Medium