Question

a circuit contains two devices that are connected in parallel if the resistance of one of these devices is 12 ohms and the resistance of the other devices for 4 ohmss the total resistance of the two devices is

Answer 1

Answer:

Total resistance, R' = 3 ohms

Explanation:

It is given that, a circuit contains two devices that are connected in parallel. There values are given as :

Resistor 1, $R_1=12\ \Omega$

Resistor 2, $R_2=4\ \Omega$

The total resistance in parallel combination is given by :

$\dfrac{1}{R'}=\dfrac{1}{R_1}+\dfrac{1}{R_2}$

$\dfrac{1}{R'}=\dfrac{1}{12}+\dfrac{1}{4}$

R' = 3 ohms

So, the total resistance of the two devices is 3 ohms. Hence, this is the required solution.

Answer 2

3 ohms i pass the test with this being the correct one