An alarm clock has a current of 4.5 amps and a resistance of 3.2 ohms. What is the voltage in the circuit? A.1.4 volts B.0.71 volts C.14 volts D.46 volts

Question

asked Jan 23, 2020 30.2k views

2 Answers

Misa · Answer 1 · 2020-01-28T12:40:05+0000

Answer: C. 14 volts

Step-by-step explanation:

According to Ohm's law, the voltage
is:

V=R.I (1)

Where:

$R=3.2\Omega$ is the resistance of the clock

I=4.5A is the electric current that flows throgh the clock

Substituting these values in (1):

$V=(3.2\Omega)(4.5A)$ (2)

$V=14.4V\approx14V$