Question

Determine the value of Resistor r no circuito abaixo:

a) 5 Ohm
b) 10 Ohm
c) 15 Ohm
d) 20 Ohm
e) 25 Ohm

Answer 1

The value of resistor r in the circuit is 10 Ohm.

Step-by-step explanation:

In a circuit containing two resistors in parallel with resistances of 15 Ω and 7 Ω, the equivalent resistance can be calculated using the formula:

Req = (R1 * R2) / (R1 + R2)

Substituting in the given resistance values:

Req = (15 Ω * 7 Ω) / (15 Ω + 7 Ω) = 10 Ω

Therefore, the value of resistor r in the circuit is 10 Ohm.