MCQ
Net resistance between $X$ and $Y$ is
  • A
    $R$
  • $2R$
  • C
    $\frac {R}{2}$
  • D
    $4R$

Answer

Correct option: B.
$2R$
b
Series parallel combination

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Suppose a pure $Si$ crystal has $5 \times 10^{28}\; atoms \;m ^{-3} .$ It is doped by $1 \;ppm$ concentration of pentavalent $As$. Calculate the number of electrons and holes. Given that $n_{i}=1.5 \times 10^{16} \;m ^{-3}$
Four very large metal plates are given the charges as shown in figure. The middle two are then connected through a wire. Find the charge that will flow through the wire
The binding energy of a nucleus is equivalent to:
Match List-$I$ with List-$II$

Choose the correct answer from the options given below :

When 2 amperes current is passed through a tangent galvanometer, it gives a deflection of 30$^\circ$. For 60$^\circ$ deflection, the current must be
A metallic square loop $ABCD$ is moving in its own plane with velocity $v$ in a uniform magnetic field perpendicular to its plane as shown in the figure. An electric field is induced     
A rectangular loop of wire, supporting a mass $m$, hangs with one end in a uniform magnetic field $\overrightarrow B $ pointing out of the plane of the paper. A clockwise current is set up such that $i > mg/Ba$, where $a$ is the width of the loop. Then
A point source of light is used in a photoelectric effect. If the source is removed farther from the emitting metal, the stopping potential:
The wave theory in its original form was first postulated by:
A closely wound coil of $100$ turns and area of cross-section $1\;c{m^2}$ has a coefficient of self-induction $1 \,mH$. The magnetic induction in the centre of the core of the coil when a current of $2A$ flows in it, will be......$Wb{m^{ - 2}}$