when a 12V battery is connected across an unknown resistor, there is a current of 2.5mA in the. circuit. calculated the value of the resistance of the resistor.

Question

Answer

Calculating the Resistance of an Unknown Resistor

Given Information:

12V battery

2.5mA current in the circuit

Calculating Resistance:

Ohm's Law states that resistance (R) is equal to voltage (V) divided by current (I).

R = V/I

Plugging in the given values:

R = 12V / 2.5mA

R = 4,800 ohms or 4.8 kiloohms

Explanation:

When a 12V battery is connected across an unknown resistor, a current of 2.5mA flows through the circuit. By using Ohm's Law, we can calculate the resistance of the unknown resistor. Ohm's Law states that resistance is equal to voltage divided by current. In this case, the voltage is 12V and the current is 2.5mA. By dividing 12V by 2.5mA, we get a resistance of 4,800 ohms or 4.8 kiloohms.

Answer

As we know that R=V/I  , therefore 12000/2 .5ohm=4,800 ohm

Answer

4800ohm

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