WBJEE · Physics · Current Electricity
The resistance across \(A\) and \(B\) in the figure below will be

- A \(3 \mathrm{R}\)
- B \(\mathrm{R}\)
- C \(\frac{R}{3}\)
- D None of these
Answer & Solution
Correct Answer
(C) \(\frac{R}{3}\)
Step-by-step Solution
Detailed explanation
Hints: Resistance are in parallel \(\therefore \operatorname{Req}=\frac{\mathrm{R}}{3}\)
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
- Which of the following statements(s) is/are true? "Internal energy of an ideal gas ..........."WBJEE 2018 Easy
- Two identical light waves, propagating in the same direction, have a phase difference \(\delta\). After they superpose the intensity of the resulting wave will be proportional toWBJEE 2009 Easy
- The minimum wavelength of Lyman series lines is \(P\), then the maximum wavelength of these lines isWBJEE 2025 Medium
- A charged particle moving with a volocity \(\vec{v}=v_1 \hat{i}+v_2 \hat{j}\) in a magnetic field \(\vec{B}\) experiences a force \(\vec{F}=F_1 \hat{i}+F_2 \hat{j}\). Here \(v_1 \cdot v_2, F_1, F_2\) all are constants. Then \(\vec{B}\) can beWBJEE 2024 Easy
- The force \(\mathrm{F}\) acting on a particle moving in a straight line is shown below. What is the work done by the force on the particle in the \(1^{\text {st }}\) meter of the trajectory?
WBJEE 2009 Easy - Four identical point masses, each of mass \(\mathrm{m}\) and carrying charge \(+\mathrm{q}\) are placed at the corners of a square of sides 'a' on a frictionless plain surface. If the particles are released simultaneously, the kinetic energy of the system when they are infinitely far apart isWBJEE 2020 Medium
More PYQs from WBJEE
- If the co-efficients of \(x^2\) and \(x^3\) in the expansion of \((3+a x)^9\) be same, then the value of ' \(a\) ' isWBJEE 2009 Medium
- The variation of density of a solid cylindrical rod of cross sectional area \(\alpha\) and length \(L\) is \(\rho=\rho_0 \frac{x^2}{L^2}\), where x is the distance from one end of the rod. The position of its centre of mass from one end \((x=0)\) is
WBJEE 2025 Medium - \[
\mathrm{X} \stackrel{\mathrm{PCl}_{\mathrm{s}}}{\longrightarrow} \mathrm{C}_2 \mathrm{H}_5 \mathrm{Cl}
\]
\[
\mathrm{Y} \stackrel{\mathrm{PCl}_5}{\longrightarrow} \mathrm{CH}_3 \mathrm{COCl}
\]
\(\mathrm{X}\) and \(\mathrm{Y}\) areWBJEE 2010 Medium - Let \(\mathrm{I}=\int_{\pi / 4}^{\pi / 3} \frac{\sin \mathrm{x}}{\mathrm{x}} \mathrm{dx}\). ThenWBJEE 2021 Medium
- The root mean square (rms) speed of \(X_2\) gas is \(\mathrm{x} \mathrm{m/s}\) at a given temperature. When the temperature is doubled, the \(\mathrm{X}_2\) molecules dissociated completely into atoms. The root mean square speed of the sample of gas then becomes (in \(\mathrm{m} / \mathrm{s}\) )WBJEE 2023 Medium
- Let the foci of the ellipse \(\frac{x^{2}}{9}+y^{2}=1\) subtend a right angle at a point \(P\). Then, the locus of \(P\) isWBJEE 2012 Medium