A rheostat is a component used to regulate current in an electric circuit without changing the voltage source. It allows for the adjustment of resistance, enabling the control of current flow. This is particularly useful in practical cases where it ...

If the resistance of a resistor is doubled, the current flowing through it is halved. This demonstrates the inverse relationship between current and resistance in an electric circuit.

The current through a resistor is inversely proportional to its resistance. When the resistance increases, the current decreases, and vice versa.

Electric potential difference (V) is defined as the work done (W) to move a unit charge (Q) from one point to another. The formula is V = W/Q.

Electricity is controllable and convenient for diverse applications in homes, schools, hospitals, and industries.