Resistance in circuit

Question

Answer 1

Step 1:

Observe the circuit.

Node between the resistors and makes the connection parallel and the resultant will be in series with the resistor .

Node between the resistors and makes the connection parallel.

Redraw the circuit.

Resultant of and :

Resultant resistance of parallel resistors formula: .

Substitute in the above expression.

Step 2:

The resultant resistance is in series with the resistor .

Series resultant resistance formula : .

Resultant of and :

Above resultant is in series with .

Therefore, .

Equivalent resistance is .

Solution :

Equivalent resistance is .