The formula for Ohms Law E= IR, where E represents voltage measured in volts, IR represents current measured in amperes, and R represents resistance measured in ohms. Suppose a current of 0.25 ampere flows through a resistor connected to a 12-volt battery. What is the resistance in the circuit?
E = IR
E = 12
I = 0.25
now its just a matter of subbing and finding R
12 = 0.25R
12/0.25 = R
48 = R....so the resistance is 48 ohms
The resistance in the circuit is 48 Ohms
Two variables are said to be proportional if an increase in one variable leads to an increase in the other variable and vice versa.
Given the formula:
E = IR;
where E is the voltage in Volts, I is the current in Ampere and R is the resistance in Ohms.
For I = 0.25 A, E = 12 V, the resistance R is:
E = IR
12 = 0.25R
R = 48 Ohms
The resistance in the circuit is 48 Ohms
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