Question

When an RL circuit is connected to a battery, what happens to the current in the circuit?

O It is initially at its maximum value and then decreases linearly with time.
O It is initially at its maximum value and then decreases exponentially with time.
O It is initially 0 and then increases exponentially with time.
O It is constant during the charging.
O It is initially 0 and then increases linearly with time.

Answer 1

Answer:It is initially 0 and then increases exponentially with time

Step-by-step explanation:

When battery is connected to RL circuit

Current varies according to

`i=i_0\left [ 1-e^{(tR)/(L)}\right ]`

where
`i_0 =maximum\ Current`

t=time

R=Resistance

L=Inductance

and Potential difference across Resistor is given by

`v=v_0\left [ 1-e^{(tR)/(L)}\right ]`

where
`v_0=maximum\ voltage`

At t=0 i=0 and as time increase value of increases exponentially