MCQ
For what value of unknown resistance $X,$ the potential difference between $B$ and $D$ will be zero in the circuit shown in the figure
- A$4 \Omega$
- ✓$6 \Omega$
- C$2 \Omega$
- D$5 \Omega$
✓
Answer
Correct option: B.
$6 \Omega$
$6 \Omega$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
The diffusion current in a p-n junction is:
In the circuit given below, $V(t)$ is the sinusoidal voltage source, voltage drop $V_{AB}(t)$ across the resistance $R$ is
→While walking on ice, one should take small steps to avoid slipping. This is because smaller steps ensure:
- Larger friction.
- Smaller friction.
- Larger normal force.
- Smaller normal force.
The rest energy of an electron is(a) 510 KeV(b) 931 KeV(c) 510 MeV(d) 931 MeV
An ammeter whose resistance is 180 Ω gives full scale deflection when current is 2 mA. The shunt required to convert it into an ammeter reading 20 mA (in ohms) is(a) 18(b) 20(c) 0.1(d) 10
In a region of constant potential:
A current passes through a resistor. Let $K_1$ and $K_2$ represent the average kinetic energy of the conduction electrons and the metal ions, respectively :
→The radius of the convex surface of plano-convex lens is 20 cm and the refractive index of the material of the lens is 1.5. The focal length of the lens is(a) 30 cm(b) 50 cm(c) 20 cm(d) 40 cm
Consider the situation shown in figure. The straight wire is fixed but the loop can move under magnetic force. The loop will:
The mass defect in a particular nuclear reaction is $0.3$ grams. The amount of energy liberated in kilowatt hours is $($Velocity of light $= 3\times 10^8 \mathrm{~m} / \mathrm{s})$
→