Question

any one pls help!!!​

Answer 1

Answer:

This question is based on the concept of Series and Parallel Circuits.

Pre-Requisites:

• Current flowing in a series circuit is equal to the total current of the circuit.
• Potential difference across resistors in a parallel connection is constant.

According to the diagram given,

Parallel Circuit - 100 ohm and R ohm resistors

Series Circuit - 10 ohm resistor

It is given that 100 V is the potential difference across R ohm. Hence the potential difference across 100 ohm would also be 100 V since it is a parallel circuit.

Hence Current flowing through the 100 ohm resistor is:

→ 100 V / 100 ohm = 1 A

Now if 100 V is the potential drop across R and 100 ohm, then Potential drop across 10 ohm resistor would be Net Potential - 100 V.

Hence Potential Drop across 10 ohm resistor is 120 V - 100 V = 20 V

Hence Current flowing through the 10 ohm resistor is

→ 20 V / 10 ohm = 2 A

Hence total current flowing in the circuit is 2 A.

So remaining current flowing through R ohm is 1 A.

Hence Value of R is given as:

→ R = V/I

→ R = 100 V / 1 = 100 ohm

Hence the value of R is 100 ohm.

Hence Option (1) is the correct option.

Answer 2

Answer:

option 1 is the correct answer ☺☺