enEnglishguગુજરાતી
JEE Mains · Physics · STD 12 - 3. current electricity
The current flowing through \(R _2\) is:
- A \(\frac{2}{3}\,A\)
- B \(\frac{1}{4}\,A\)
- C \(\frac{1}{2}\,A\)
- D \(\frac{1}{3}\,A\)
Answer & Solution
Correct Answer
(D) \(\frac{1}{3}\,A\)
Step-by-step Solution
Detailed explanation
\(R _{ eq }=4\,\Omega\) \(i =\frac{8}{4}=2\,A\) \(i _1=\frac{2 \times 3}{3+6}=\frac{2}{3}\,A\) \(i _2=\frac{2 / 3}{2}=\frac{1}{3}\,A\)
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 plane polarized light is incident on a polariser with its pass axis making angle \(\theta\) with \(x-\) axis, as shown in the figure. At four different values of \(\theta\), \(\theta\, = 8^o, 38^o, 188^o\) and \(218^o\), the observed intensities are same. What is the angle between the direction of polarization and \(x-\) axis.....\(^o\)
JEE Mains 2018 Hard - Two charged conducting spheres \(S_1\) and \(S_2\) of radii \(8\) cm and \(18\) cm are connected to each other by a wire. After equilibrium is established, the ratio of electric fields on \(S_1\) and \(S_2\) spheres are \(E_{S_1}\) and \(E_{S_2}\) respectively. The value of \(\dfrac{E_{S_1}}{E_{S_2}}\) is _______.JEE Mains 2026 Medium
- A \(70\, kg\) man leaps vertically into the air from a crouching position. To take the leap the man pushes the ground with a constant force \(F\) to raise himself The center of gravity rises by \(0.5\, m\) before he leaps. After the leap the \(c.g.\) rises by another \(1\, m\). The maximum power delivered by the muscles is : (Take \(g\, = 10\, ms^{-2}\))JEE Mains 2013 Hard
- The average translational kinetic energy of \({N}_{2}\) gas molecules at \(\ldots \ldots \ldots . .{ }^{\circ} {C}\) becomes equal to the \({K} . {E}\). of an electron accelerated from rest through a potential difference of \(0.1\) \(volt.\) \(\left(\right.\) Given \(\left.{k}_{{B}}=1.38 \times 10^{-23} \, {J} / {K}\right)\) (Fill the nearest integer).JEE Mains 2021 Medium
- A proton moving with one tenth of velocity of light has a certain de Broglie wavelength of \(\lambda\). An alpha particle having certain kinetic energy has the same de-Brogle wavelength \(\lambda\). The ratio of kinetic energy of proton and that of alpha particle is:JEE Mains 2023 Medium
- Mass numbers of two nuclei are in the ratio of \(4: 3\). Their nuclear densities will be in the ratio ofJEE Mains 2022 Medium
More PYQs from JEE Mains
- \(\max_{0 \leq x \leq \pi}\left(16\sin\left(\dfrac{x}{2}\right)\cos^3\left(\dfrac{x}{2}\right)\right)\) is equal to:JEE Mains 2026 Medium
- A transformer operating at primary voltage \(8\,kV\) and secondary voltage \(160\,V\) serves a load of \(80\,kW\). Assuming the transformer to be ideal with purely resistive load and working on unity power factor, the loads in the primary and secondary circuit would be.JEE Mains 2022 Medium
- Let the vertex \(A\) of a triangle \(ABC\) be \((1, 2)\), and the mid-point of the side \(AB\) be \((5, -1)\). If the centroid of this triangle is \((3, 4)\) and its circumcenter is \((\alpha, \beta)\), then \(21(\alpha + \beta)\) is equal to:JEE Mains 2026 Medium
- A uniform metal chain of mass \(m\) and length ' \(L\) ' passes over a massless and frictionless pulley. It is released from rest with a part of its length ' \(l\) ' is hanging on one side and rest of its length ' \(L -l\) ' is hanging on the other side of the pulley. At a certain point of time, when \(l=\frac{L}{x}\), the acceleration of the chain is \(\frac{g}{2}\). The value of \(x\) is ........
JEE Mains 2022 Hard - All \(x\) satisfying the inequality \({\left( {{{\cot }^{ - 1}}\,x} \right)^2} - 7\left( {{{\cot }^{ - 1}}\,x} \right) + 10 > 0\), lie in the intervalJEE Mains 2019 Hard
- The number of elements in the set \(\{ z = a + ib \in C : a , b \in Z\) and \(1<| z -3+2 i |<4\}\) is.......JEE Mains 2022 Hard