Question

Very easy physics maths about current and other stuffs only one question please help me



Three identical resistors of resistance 3 ohms are connected in series in a circuit. What is the total voltage of the battery if the current in the circuit is 2A ?

Answer 1

Answer:

Total voltage of the battery is 12 volts.

Explanation:

It is given that, we have three identical resistors of resistance 3 ohms are connected in series in a circuit. It is required to find the total voltage of the battery if the current in the circuit is 2 A.

Let $R'$ is the equivalent resistance in series combination. The equivalent resistance is given by :

$R'=R_1+R_2\\\\R'=3+3\\\\R'=6\ \Omega$

Let V is the total voltage of the battery. Ohm's law is given by :

$V=IR\\\\V=2\times 6\\\\V=12\ V$

So, the total voltage of the battery is 12 volts.