Question

The current flowing through a lamp is 1.5 A. It is plugged into a 120-V outlet. What is the resistance of the lamp

Answer 1

Step-by-step explanation:

According to ohm's law, current flowing through a conductor is directly proportional to the voltage over resistance.

Mathematically, I =
`(V)/(R)`

where, I = current

V = voltage

R = resistance

It is given that value of voltage is 120 V and current is 1.5 ampere. Therefore, calculate the resistance as follows.

I =
`(V)/(R)`

or, R =
`(V)/(I)`

=
`(120 V)/(1.5 A)`

= 80 volts per ampere

= 80 ohms

Hence, resistance of the lamp is 80 ohms.

Answer 2

Resistance = (voltage) / (current) =

(120 V) / (1.5 A) = 80 ohms .