The voltage, V, in an electric circuit is held constant, the current I, is inversely proportional to the resistance, R. If the c urrent is 120mA (milliampere) when resistance is 5 ohms, find the current when the ersistance is 15 ohms.
1 answer:
Answer:
70 amps
Step-by-step explanation:
The current I is inversely proportional to the resistance R
I=k/R (k is the constant of proportionality)
A) I=210 amperes
R=4 ohms
I=k/R
k=I×R
k=210×4=840
B) R=12 ohms
k=840
I=k/R
I=840/12=70 amperes
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