# A LAMP IS RATED 240 V, 60 W AND DETERMINE THE RESISTANCE OF THE LAMP WHEN LIT

To determine the resistance of a lamp when it is lit, we can use Ohm’s Law. Ohm’s Law states that the current flowing through a conductor is directly proportional to the voltage applied across it and inversely proportional to its resistance. The formula for Ohm’s Law is:

**I = V / R**

**Resistance (R) = Voltage (V) / Current (I)**

In this case, we are given that the lamp is rated at 240 volts and 60 watts. We can use the power equation to find the current flowing through the lamp:

**Power (P) = Voltage (V) * Current (I)**

Rearranging the equation, we can solve for the current:

**Current (I) = Power (P) / Voltage (V)**

Substituting the given values, we have:

**Current (I) = 60 watts / 240 volts **

**Current (I) = 0.25 amperes**

Now that we know the current flowing through the lamp, we can calculate its resistance using Ohm’s Law:

**Resistance (R) = Voltage (V) / Current (I)**

** Resistance (R) = 240 volts / 0.25 amperes**

** Resistance (R) = 960 ohms**

Therefore, when the lamp is lit, its resistance would be **960 ohms**.