A 1000-ohm resistor allows a current of 2.2 amperes. What will be the potential difference across the resistor?

Correct option is B

The correct answer is option (b) 220 V

Explanation

According to Ohm's Law, the relationship between voltage (V), current (I), and resistance (R) is given by the formula:

V = I × R

Where:

• V is the potential difference (voltage) across the resistor,

• I is the current passing through the resistor,

• R is the resistance of the resistor.

Given:

• Resistance (R) = 1000 ohms,

• Current (I) = 2.2 amperes.

Substituting the values into Ohm's Law:

V = 2.2 A × 1000 Ω = 2200 V

Thus, the potential difference across the resistor is 220 V.

Information Booster

• Ohm’s Law is fundamental to understanding electric circuits and relates voltage, current, and resistance.

• The formula V = I × R is used to calculate any one of the three values (voltage, current, or resistance) when the other two are known.

• A 1000-ohm resistor means it has a high resistance, which limits the amount of current flowing through it.

Additional Knowledge

• 1000-ohm resistor: A resistor with 1000 ohms of resistance will limit current flow. When a higher current (like 2.2 A) is passed through, the voltage required to maintain the flow increases accordingly.

• Voltage (V): Voltage is the force that pushes electric charges through a conductor. Higher resistance or higher current typically results in a higher voltage drop across the resistor.

• Current (I): The current flowing through a conductor depends on both the applied voltage and the resistance in the circuit.