What is the electric current produced when a voltage of 9 V9V is applied to a circuit with a resistance of 66 Omega?

1 Answer
Jan 23, 2016

Current =136.364 " mA"

Explanation:

I=V/R where I is the current, V is the voltage, and R is the resistance.
color(white)("XX")Think of it this way:
color(white)("XXXX")If you increase the pressure (voltage), you will increase the amount of current.
color(white)("XXXX")If you increase the resistance, you will decrease the amount of current.
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Current is measured with a base unit of A = ampere which is defined as the current produced by 1 V through a circuit with 1 Omega resistance.

For the given values:
color(white)("XXX")I = (9 V)/(66 Omega)

color(white)("XXX")=3/22 A = 0.136364 A

For values in this range it is more common to specify the result in mA (miliamperes) where 1000 mA = 1 A