Question

In the circuit shown in the following figure. The
current through 8 ohm is same initially and after
connecting E. The value of E is :-

(1) 3.5 V
(3) 6 V
(2) 3 V
(4) 2 V​

Answer 1

Answer:

3.5 V is the answer. ✌️✌️

Answer 2

Answer:

Explanation:

Concept:

The concept of electric circuit will be used to solve the question .

Given:

The current through the circuit is $8 ohm$  and $E$ will be connected with this circuit. The voltage is $12V$ .The total resistance is $8+8+8=24 ohm$ .

To Find:

We have to find the value of $E$ .

Solution:

In the given circuit, the value of total Resistance is  $8+8+8=24 ohm$

The voltage impressed on the circuit is $12V$ .

The formula of ohm's law is $i=\frac{E}{R}$ .

In this law, $i$ is current, $E$ is the voltage and $R$ is the resistance.

Put the value to get the value of $i$ .

$i=\frac{E}{R}=\frac{12}{24} =\frac{1}{2} A$

We have to find the value of $E$ is $\frac{1}{2} \times 8=4A$ .

The value of $E$ is $4A$ .

#SPJ2