Question

In the series circuit, if the potential difference across the battery is 20 V and the potential difference across R1 is 12 V, what is the potential difference across R2

Answer 1

Answer:

The correct answer is "8 V".

Explanation:

Given:

Potential difference across battery,

= 20 V

Potential difference across R1,

= 12 V

Now,

On applying the Kirchorff loop, we get

⇒ $E-I_1R_1-I_2R_2=0$

⇒ $E-V_1-V_2=0$

⇒ $V_2=E-V_1$

On putting values, we get

⇒      $=20-12$

⇒      $= 8 \ V$