The purpose of adding a resistor in parallel to a circuit with two other resistors is to decrease the overall resistance of the circuit. This is because resistors in parallel have an equivalent resistance that is less than the smallest individual resistor in the circuit.
Adding a resistor in parallel to a circuit with two other resistors will increase the total current in the circuit. This is because the equivalent resistance decreases, causing the total current to increase according to Ohm's Law (I = V/R).
No, the voltage across each resistor will remain the same when a resistor is added in parallel. This is because the voltage in a parallel circuit is constant, and adding a resistor in parallel does not change the overall voltage of the circuit.
The total power dissipated in the circuit will increase when a resistor is added in parallel. This is because the total current in the circuit increases, causing more power to be dissipated through the resistors according to the formula P = I^2*R.
Technically, there is no limit to the number of resistors that can be added in parallel to a circuit. However, as more resistors are added, the equivalent resistance of the circuit decreases, causing the total current to increase and potentially causing other components to overheat. Therefore, it is important to carefully calculate and design the circuit to ensure it can handle the added resistors.