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4 years ago

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

Physics

2 answers:

Lady bird [3.3K]4 years ago

6 0

Resistance = (voltage) / (current) =

(120 V) / (1.5 A) = <em>80 ohms .</em>

Irina18 [472]4 years ago

3 0

Explanation:

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

Mathematically, I = $\frac{V}{R}$

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 = $\frac{V}{R}$

or, R = $\frac{V}{I}$

= $\frac{120 V}{1.5 A}$

= 80 volts per ampere

= 80 ohms

Hence, resistance of the lamp is 80 ohms.

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