Courses
Courses for Kids
Free study material
Offline Centres
More
Store Icon
Store
seo-qna
banner

In circuit shown in figure the current through
168飞艇 6342312b5aac61fe78cf444d9cfaad5a
A. the \[3\Omega \] resistor is \[0.50A\]
B. the \[3\Omega \] resistor is \[0.25A\]
C .the \[4\Omega \] resistor is \[0.50A\]
D. the \[4\Omega \]resistor is \[0.25A\]



Answer
VerifiedVerified
302.1k+ views
Hint: The resistor's voltage V in volts (V) divided by its resistance R in ohms (R) gives rise to the resistor's current I in amps (A): V is the voltage drop of the resistor, expressed in Volts (V). Voltage is sometimes represented by the letter E in Ohm's law.


Formula used:


Complete answer:
We have been provided in the question that the current through the circuit is,
168飞艇 8720d1bf8fef46afc4e06fc3ffd605d1
To begin, we will calculate the equivalent resistance of the resistors in the circle.
168飞艇 ac0be181a0a8d539434ebfe24bf96c4f
These resistances are connected in series. As a result, their equivalent resistance is equal to \[2\Omega + 4\Omega + 2\Omega = 8\Omega \] according to the formula. This equivalent resistor, together with the resistor in the box, yields an equivalent resistor of \[{\left( {\frac{1}{{8{\rm{\Omega }}}} + \frac{1}{{8{\rm{\Omega }}}}} \right)^{ - 1}} = 4{\rm{\Omega }}\]
This is depicted in the following figure.
168飞艇 16b4fb8c28cf50c38ec40eebfb41bed2
Repeating the process for the resistors in the circle and box, we get the equivalent resistance of the resistors in the circle as \[2\Omega + 4\Omega + 2\Omega = 8\Omega \], and the equivalent resistance of this and the resistor in the box as \[{\left( {\frac{1}{{8{\rm{\Omega }}}} + \frac{1}{{8{\rm{\Omega }}}}} \right)^{ - 1}} = 4{\rm{\Omega }}\].
This is depicted in the following figure.
168飞艇 dcaf1447baf4e0e91bbb6a6a96d614df
We can observe that the overall resistance in the circuit is
\[2\Omega + 4\Omega + 3\Omega = 9\Omega \]
As per Ohm's law, the current flowing through in this circuit will now be
\[V = IR\]
On solving for I, we can write as
\[I = \frac{V}{R}\]
Now, we have to substitute the value we get
\[ = \frac{{9V}}{{9{\rm{\Omega }}}}\]
On simplifying the above equation, we get
\[ = 1A\]
Returning to the original circuit, the resistance on both routes is equal, therefore the current divides equally once more.
168飞艇 d86cadf1920efc5abc0805842721d06c
This gives us the current through the \[3\] ohm resistor as \[1\] amp and the current through the 4 ohm resistor as \[0.25\] amp
As a result, the current will be divided equally.
Hence, the option B is correct






Note: Keep in mind that current does not always split evenly between the two branches of the circuit. It is determined by the amount of resistance between them. The current was equally distributed in this case because the resistance on the different branches of the circuit was equal.