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

Total voltage of the battery is 12 volts.

Step-by-step 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* 6\\\\V=12\ V`

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