Calculate the current in a 75 Ω resistor when a potential difference of 115 V is placed across it. What will the current be if the resistor is replaced with a 47 Ω resistor?

1.53A; 2.45A

Explanation:

According to ohm's law which states that the current passing through a metallic conductor at constant temperature is directly proportional to the potential difference across its ends. Mathematically,

V = IR where;

V is the potential difference

I is the current

R is the Resistance.

If a a potential difference of 115 V is placed across 75ohms resistor, the current in the resistor can be calculated as;

I = V/R where;

V = 115V

R = 75ohms

I = 115/75

I = 1.53A

If the resistor is replaced with a 47ohms resistor, the current I'm the resistor will be calculated as;

I = V/R

I = 115/47

I = 2.45A

According to the answers, the current decreases with increasing resistance because resistance tends to oppose the flow of current.

,

Explanation:

The current is determined by the Ohm's Law:

The current in a Resistor is:

If current resistor is replaced by model, then the current is:

in simple terms, the principle states that the buoyancy force on an object is equal to the weight of the fluid displaced by the object, or the density of the fluid multiplied by the submerged volume times the gravitational acceleration, g. this is also known as upthrust.

12000j is work done