Why is power maximum when internal resistance is equal to external resistance?

If we have to find the maximum power output then it will be differentiated with respect to $R$ and then make it equal to zero and substitute the value of $R$ to get the maximum value of power output. So, the power will be maximum when the value of external resistance is equal to the value of internal resistance.

What is the condition for the maximum power dissipation of a cell in a circuit?

The condition for maximum power dissipation can be calculated by differentiating power with respect to R and then equating it to zero. When the value of the external resistance is equal to the internal resistance then the power will be maximum.

When the load resistance equals the source resistance maximum power is delivered to the load from the source?

From the above table and graph we can see that the Maximum Power Transfer occurs in the load when the load resistance, RL is equal in value to the source resistance, RS that is: RS = RL = 25Ω.

What happens to internal resistance of cell with time?

As the battery or cell is in continuous use, consuming electrolyte and the chemical reaction keeps occurring in the cell, due to which the concentration of ions in the cell decreases and this resists the flow of charge through it. Hence, the internal resistance increases with time.

What is the maximum power dissipated?

Maximum Power Dissipation indicates a component’s maximum capability to transfer and conduct this power loss without overheating. power dissipation and is measured in Watts.

What is the maximum power delivered by battery?

When charging a capacitor, the rate at which the battery provides energy is maximum at t=0 but the instant at which power delivered to the capacitor is maximum is t=CRln(2) (where C is the capacitance of the capacitor and R is the resistance of the circuit).

When a source is delivering maximum power to the load the efficiency of the circuit is?

When the source is delivering maximum power to the load, the efficiency will be. Maximum. Below 50\%

Why does internal resistance increase over time?

The chemical reaction that takes place inside a battery is the main thing of increasing internal resistance of the battery by increasing of time. Due to that the internal voltage drop also increases which leads to decrease of the terminal voltage of the battery…

Does internal resistance of cell depends on current drawn from the cell?

Explanation: Internal resistance of a cell doesnt depend on the current drawn from it. Internal resistance of a cell doesnt depend on the current drawn from it.

When maximum power is delivered to a circuit?

Maximum power transfer theorem states that the DC voltage source will deliver maximum power to the variable load resistor only when the load resistance is equal to the source resistance.