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

The total voltage of the circuit is 18 volts.

Step-by-step explanation:

We have, three identical resistors of resistance 3 ohms are connected in series in a circuit.

For a series combination, the equivalent resistance is given by the sum of individual resistances i.e.

`R_(eq)=R_1+R_2+R_3\\\\R_(eq)=3+3+3\\\\R_(eq)=9\ \Omega`

Let V is the voltage of the battery if the current in the circuit is 2 A. So,

`V=IR`

`V=2* 9\\\\V=18\ V`

So, the total voltage of the circuit is 18 volts.