To calculate power loss, you can use the formula P = (V^2)/R, where P is power loss in watts, V is voltage change in volts, and R is resistance in ohms.
The 3 ohms resistance represents the amount of opposition to current flow in the circuit. It is used in the formula to determine the amount of power loss that will occur due to a change in voltage.
No, power loss cannot be negative in this calculation. It is always a positive value, as it represents the amount of energy that is dissipated as heat in the circuit.
As resistance increases, power loss also increases. This is because with higher resistance, there is more opposition to current flow, resulting in a greater voltage drop and therefore a higher power loss.
Yes, there is a limit to the amount of power loss that can occur in a circuit. This is determined by the maximum power handling capacity of the components in the circuit. If the power loss exceeds this limit, it can cause damage to the components.