MCQ
Find current in $6\,\Omega $ resistance
- AZero
- ✓$\frac{2}{3}\,A$
- C$\frac{4}{3}\,A$
- D$2\,A$
✓
Answer
Correct option: B.
$\frac{2}{3}\,A$
b
$\mathrm{R}_{\mathrm{eq}}=[(2+1) \| 6]+3=5 \,\Omega$
$\mathrm{R}_{\mathrm{eq}}=[(2+1) \| 6]+3=5 \,\Omega$
$I=\frac{10}{5}=2 \,A$
$I_{1}=\frac{3}{9} \times 2=\frac{2}{3} \,A$
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
A spring-block system is resting on a frictionless floor as shown in the figure. The spring constant is $2.0 N m ^{-1}$ and the mass of the block is $2.0 kg$. Ignore the mass of the spring. Initially the spring is in an unstretched condition. Another block of mass $1.0 kg$ moving with a speed of $2.0 m s ^{-1}$ collides elastically with the first block. The collision is such that the $2.0 kg$ block does not hit the wall. The distance, in metres, between the two blocks when the spring returns to its unstretched position for the first time after the collision is. . . . . .
→The work functions of metals $A$ and $B$ are in the ratio $1 : 2$. If light of frequencies $f$ and $2f$ are incident on the surfaces of $A$ and $B$ respectively, the ratio of the maximum kinetic energies of photoelectrons emitted is (f is greater than threshold frequency of $A, 2f$ is greater than threshold frequency of $B$)
→The angle of a prism is $60^{\circ}$. When light is incident at an angle of $60^{\circ}$ on the prism, the angle of emergence is $40^{\circ}$. The angle of incidence $i$ for which the light ray will deviate the least is such that
→A particle performs simple harmonic motion with amplitude A. Its speed is increased to three times at an instant when its displacement is $\frac{2 \mathrm{~A}}{3}$. The new amplitude of motion is $\frac{\mathrm{nA}}{3}$. The value of $\mathrm{n}$ is____.
→Two steel wires of same length but radii $r$ and $2r$ are connected together end to end and tied to a wall as shown. The force stretches the combination by $10\ mm$. How far does the midpoint $A$ move ............ $mm$
→In the following diagram, the lengths of wires $A B$ and $B C$ are equal, but the radius of wire $A B$ is double that of $B C$. The ratio of potential gradient on wires $A B$ and on $B C$ will be (wires are made of same material)
→The resultant of these forces $\overrightarrow{O P}, \overrightarrow{O Q}, \overrightarrow{O R}, \overrightarrow{O S}$ and $\overrightarrow{{OT}}$ is approximately $\ldots \ldots {N}$.
→[Take $\sqrt{3}=1.7, \sqrt{2}=1.4$ Given $\hat{{i}}$ and $\hat{{j}}$ unit vectors along ${x}, {y}$ axis $]$
The magnetic field due to a current carrying circular loop of radius $3\, cm$ at a point on the axis at a distance of $4\, cm$ from the centre is $54\, \mu T$. What will be its value at the centre of the loop.......$\mu T$
→Thermions are
A particle which has zero rest mass and non-zero energy and momentum must travel with a speed