Question

How much current is in a circult that includes a 9.0-volt battery and a bulb with a resistance of 4.0 ohms?

A.
0.44 amps
B.
36 amps
C. 2.3 amps
D. 13 amps

Answer 1

Current, I = 2.3 A

Step-by-step explanation:

We have,

Voltage of the battery in a circuit is 9 volts

Resistance of the circuit is 4 ohms

It is required to find the current in a circuit. When the voltage and the resistance of the circuit is given then we can find the current in it is given by Ohm's law as :

`V=IR`

I is electric current

`I=(V)/(R)\\\\I=(9)/(4)\\\\I=2.25\ A`

or

I = 2.3 A

So, the current in the circuit is 2.3 A.