SOLUTION: Ohm's law states that V=IR for a simple circuit, where V is the total voltage, I is the amount of current running through the resistor and R is the resistance of the resistor. If I

Question 1151269: Ohm's law states that V=IR for a simple circuit, where V is the total voltage, I is the amount of current running through the resistor and R is the resistance of the resistor. If I=40 amperes when R=3 ohms, find the amount of current (in amperes) when the resistor has a resistance of 20 ohms. Assume voltage remains constant
Answer by ikleyn(52776) (Show Source): You can put this solution on YOUR website!
.

A beginner student may solve the problem in two steps.

Step 1. Find voltage. Use the Ohm's law with given I = 4 amperes and R = 3 ohms.

         V = I*R = (substitute the given I = 4 amperes and R = 3 ohms) = 4*3 = 12 volts.

Step 2. Find the current. Use the Ohm's law in the form I = with the found V = 12 volts and given R = 20 ohms.

         I =  =  =  amperes = 0.6 amperes.    ANSWER

Solved and explained.

RELATED QUESTIONS
Ohm�s Law relates to a simple electric circuit and states: One circuit has a... (answered by Alan3354)

Electronics, according to Ohm's law, E = IR, where "E" is voltage (measured in volts),... (answered by indra89811)

In electrical theory, Ohm's law states that I=V/ R, where I is the current in amperes, V... (answered by Alan3354)

Ohm's law states the formula E= IR in which E is the voltage of the circuit measured in... (answered by )

Complex numbers are used in electronics to describe the current in an electric circuit.... (answered by ankor@dixie-net.com)

Ohm's law is an important law in science. This formula relates voltage, current, and... (answered by Alan3354)

In electronics, according to Ohm's law, E = IR, where "E" is voltage (measured in... (answered by Alan3354)

The voltage v in a certain circuit is given by v=6.0-100i, where i is the current... (answered by ikleyn)