MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

RLC Circuit

Refer to the ...

Question

Refer to the circuit diagram and the corresponding graphs. The current rises when key $K$ is pressed. With $R = R_{1}$ and $L = L_{1}$ the rise of current is shown by curve (1), while curve (2) shows the rise of current when $R = R_{2}$ and $L = L_{2}$ . The maximum current is same for both curves, then :

A

R_{1} = R_{2}, L_{1} = L_{2}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

R_{1} > R_{2}, L_{1} = L_{2}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

R_{1} > R_{2}, L_{1} < L_{2}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

R_{1} = R_{2}, L_{1} < L_{2}

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is D $R_{1} = R_{2}, L_{1} < L_{2}$
Consider the expression for the current rising exponentially in the $L R$ circuit. The time constant is $(L / R)$ . In this case, the curve (1) is rising faster than curve (2) indicating that $(L_{1} / R_{1}) < (L_{2} / R_{2})$ . However, in both the cases the maximum current is the same and equal to $(V / R_{1})$ or $(V / R_{2})$ . Which means $R_{1} = R_{2}$ .

Suggest Corrections

thumbs-up

0

Similar questions

Q. Refer to the circuit diagram and the corresponding graphs. The current rises when key

K

is pressed. With

R = R_{1}

L = L_{1}

the rise of current is shown by curve (1), while curve (2) shows the rise of current when

R = R_{2}

L = L_{2}

. The maximum current is same for both curves, then :

Q. Refer to the circuit diagram and the corresponding graphs. The current rises when key

K

is pressed. With

R = R_{1}

L = L_{1}

the rise of current is shown by curve (1), while curve (2) shows the rise of current when

R = R_{2}

L = L_{2}

. The maximum current is same for both curves, then :

Q. Current growth in two

L - R

circuits (B) and (C) as shown in figure (A), Let

L_{1}, L_{2}, R_{1}

R_{2}

be the corresponding values in two circuits. Then

Q. A box contains L,C and R. When

250 V

dc is applied to the terminals of the box, a current of

1.0 A

flows in the circuit. When ac source of

250 V

2250 r a d / s

connected, a current of

1.25 A

rms flows. It is observed that the current rises with frequency and becomes maximum at

4500

rad/s. Find the values of L, C and R. Draw the circuit diagram.

Q. A circuit consisting of a constant e.m.f. 'E', a self induction 'L' and a
resistance 'R' is closed at t = 0. The relation between the current I
in the circuit and time t is as shown by curve 'a' in the fig. When one
or more of parameters E, R & L are changed , the curve 'b' is obtained
.The steady state current is same in both the cases. Thenit is possible that :

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

PHYSICS

Watch in App

explore_more_icon

Explore more

Standard XI Physics

Join BYJU'S Learning Program

CrossIcon