Question

calculate the resistance of a heater of rating 600w-120 volt​

Answer 1

Answer:

R = 24 ohm

Explanation:

P = V^2 / R

600 = 120 *120 / R

R = 120 * 120 / 600

R = 24 ohm

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Answer 2

Answer:

Explanation:

Second, in order to have I = 2A with V = 250V, we need R = V/I = 125 Ohms. Same answer as many of the others. But this is true only for the steady state, while the heater element is hot. Before it heats up, the heater element will have a somewhat lower resistance — something like 7 or 8 percent less if we are comparing resistance at room-temperature vs. red-hot glowing temperature. (Resistance increases with temperature.)