When a voltage of 120 V is impressed across an electric heater, a current of 0.22 A will flow through the heater if the resistance is ____________ Omega.

To find the resistance (Ω), you can use Ohm's Law, which states that the current flowing through a conductor is directly proportional to the voltage impressed across it and inversely proportional to its resistance. The formula for Ohm's Law is:

Resistance (Ω) = Voltage (V) / Current (A)

Given that the voltage (V) is 120 V and the current (A) is 0.22 A, we can substitute these values into the formula to find the resistance:

Resistance (Ω) = 120 V / 0.22 A

Now, let's calculate it:

Resistance (Ω) = 545.45 Ω

Therefore, the resistance of the electric heater is approximately 545.45 Ω when a voltage of 120 V is impressed across it and a current of 0.22 A flows through it.

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