SOLUTION: In a​ circuit, the electric current​ (in amperes) varies inversely as the resistance​ (in ohms). If the current is 40 amperes when the resistance is 4 ​ohms

Algebra ->  Finance -> SOLUTION: In a​ circuit, the electric current​ (in amperes) varies inversely as the resistance​ (in ohms). If the current is 40 amperes when the resistance is 4 ​ohms      Log On


   



Question 1080944: In a​ circuit, the electric current​ (in amperes) varies inversely as the resistance​ (in ohms). If the current is 40 amperes when the resistance is 4 ​ohms, find the current when the resistance is 5 ohms
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
ain fact, Ohm's law is:
+E+=+I%2AR+ where
+E+=+voltage+ volts
+I+=+current+ amps
+R+=+resistance+ ohms
--------------------
If I rewrite this as:
+I+=+E%2A%281%2FR%29+, then
+E+ becomes the constant
of proportionality
--------------------------
case 1:
+40+=+E%2A%281%2F4+%29+
+E+=+160+
--------------------
case 2:
+I+=+E%2A%281%2F5%29+
+I+=+160%2A%281%2F5%29+
+I+=+32+ amperes