An electric heater is really just a resistor with a voltage across it. If you want...

An electric heater is really just a resistor with a voltage across it. If you want to have 682 W of heat with a voltage V = 112 volts, what resistance (Ω) should the heater coil have?

Expert Solution

Given :

heat produced by an electric heater, P = 682 W

voltage, V = 112 V

using an equation, P = V I { eq.1 }

where, I = V / R

then P = V (V / R)

P = V²/ R { eq.2 }

inserting the values in eq.2,

(682 W) = (112 V)² / R

R = (12544 V²) / (682 W)

R = 18.4

The heater coil should have a resistance 18.4 .

genius_generous answered 1 year ago

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