[amp_mcq option1=”The total current is equal to the sum of the currents through the resistance and inductance” option2=”The current always has the same amplitude and phase for every part of the circuit” option3=”The total current is less than the sum of the currents through the resistance and inductance” option4=”The total current leads the total voltage by less than 90 E. None of the above” correct=”option1″]
The correct answer is: A. The total current is equal to the sum of the currents through the resistance and inductance.
In a parallel RL circuit, the total current is equal to the sum of the currents through the resistance and inductance. This is because the current through each component is independent of the current through the other component. The current through the resistance is in phase with the voltage, while the current through the inductance leads the voltage by 90 degrees. The total current is therefore the vector sum of the current through the resistance and the current through the inductance.
Option B is incorrect because the current does not always have the same amplitude and phase for every part of the circuit. The current through the resistance is in phase with the voltage, while the current through the inductance leads the voltage by 90 degrees. The total current is therefore the vector sum of the current through the resistance and the current through the inductance.
Option C is incorrect because the total current is not always less than the sum of the currents through the resistance and inductance. The total current is equal to the sum of the currents through the resistance and inductance.
Option D is incorrect because the total current does not always lead the total voltage by less than 90 degrees. The total current is equal to the sum of the currents through the resistance and inductance. The current through the resistance is in phase with the voltage, while the current through the inductance leads the voltage by 90 degrees. The total current is therefore the vector sum of the current through the resistance and the current through the inductance.
Option E is incorrect because one of the above statements is true.