A series RL circuit is initially relaxed. A step voltage is applied to the circuit. If t is the time constant of the circuit, the voltage across R and L will be same at time t equal to

A series RL circuit is initially relaxed. A step voltage is applied to

1.	A series RL circuit is initially relaxed. A step voltage is applied to the circuit. If t is the time constant of the circuit, the voltage across R and L will be same at time t equal to
A.	<span class="symbol">t</span>
B.	ln 2
C.	<img src="/_files/images/electronics-and-communication-engineering/networks-analysis-and-synthesis/146-1027-1.png">
D.	<img src="/_files/images/electronics-and-communication-engineering/networks-analysis-and-synthesis/146-1027-2.png">
E.	<img src="/_files/images/electronics-and-communication-engineering/networks-analysis-and-synthesis/146-1027-3.png">
Answer» B. ln 2