A 120-V fish-tank heater is rated at 110 W.
1. Calculate the current through the heater when it is operating.
2. Calculate its resistance.
No referring, please.
A)
The elation between power and current is
P = i V
I = P / V = ( 110 W / 120 V ) = 0.92 A
B)
POwer interms of resistance
P = V^2 / R
R = v ^2 / P = ( 120 V ) ^2 / ( 110 W = 131 ohm
A 120-V fish-tank heater is rated at 110 W. 1. Calculate the current through the heater when it is operating. 2. Calculate its resistance. Attachment image
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