Answer:
According to ohm's law, current flowing through a conductor is directly proportional to the voltage over resistance.
Mathematically, I =
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 =
or, R =
=
= 80 volts per ampere
= 80 ohms
Hence, resistance of the lamp is 80 ohms.
