So I have a circuit setup 15v dc and a 220 R. My goal is to calculate the correct power rating and replace the current 1/4 resistor if a new one is appropriate.
source:
15V/220R ohm = .068 amps
the resistor:
P = I^2R
P = (.068 amps )^2 x (220 ohms)
P = 1.017 watts
The P(watts) looks high to me. Is my P correct? If so is it supposed to be doubled for safety sakes? Also so far one has not been burned up.
source:
15V/220R ohm = .068 amps
the resistor:
P = I^2R
P = (.068 amps )^2 x (220 ohms)
P = 1.017 watts
The P(watts) looks high to me. Is my P correct? If so is it supposed to be doubled for safety sakes? Also so far one has not been burned up.
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