How much current will flow through a 2.4 kilohm resistor when 7.2 kilovolts is applied?

How much current will flow through a 2.4 kilohm resistor when 7.2 kilovolts is applied?

• A. 3 A
• B. 2 A
• C. 3.5 A
• D. 4 A

Answer: (A)

To determine how much current flows through a resistor when a voltage is applied, you can use Ohm's Law, which states that the current (I) is equal to the voltage (V) divided by the resistance (R). The formula is expressed as: \[ I = \frac{V}{R} \] In this problem, the voltage applied is 7.2 kilovolts (or 7200 volts) and the resistance is 2.4 kilohms (or 2400 ohms). Plugging these values into the formula: \[ I = \frac{7200 \text{ volts}}{2400 \text{ ohms}} \] Calculating this gives: \[ I = 3 \text{ amperes} \] This calculation confirms that the current flowing through the 2.4 kilohm resistor when 7.2 kilovolts is applied is indeed 3 A. This application of Ohm's Law illustrates a fundamental principle of electrical circuits and reinforces the relationship between voltage, current, and resistance.

To determine how much current flows through a resistor when a voltage is applied, you can use Ohm's Law, which states that the current (I) is equal to the voltage (V) divided by the resistance (R). The formula is expressed as:

[ I = \frac{V}{R} ]

In this problem, the voltage applied is 7.2 kilovolts (or 7200 volts) and the resistance is 2.4 kilohms (or 2400 ohms). Plugging these values into the formula:

[ I = \frac{7200 \text{ volts}}{2400 \text{ ohms}} ]

Calculating this gives:

[ I = 3 \text{ amperes} ]

This calculation confirms that the current flowing through the 2.4 kilohm resistor when 7.2 kilovolts is applied is indeed 3 A. This application of Ohm's Law illustrates a fundamental principle of electrical circuits and reinforces the relationship between voltage, current, and resistance.