what is the resistance of a car light bulb that conducts 0.025 A current when connected to a 12 V car accumulator? Is the curren t in the bulb steady?
2 answers:
Answer:
R = 480 Ohm
Yes, the current is steady since the power supply is a constant 12V (comming from the battery).
Explanation:
U=I*R
R = U / I
U = 12 V
I = 0.025 A
R = 12 / 0.025
R = 480 Ohm
Resistance=voltage/current
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