Physics Crash Course JEE Main>Chapter 16 - Electromagnetic Induction and Alternating Currents>Level 2>Q 34

MEDIUM

JEE Main

IMPORTANT

Earn 100

The current graph for resonance in $LC$ circuit is

50% studentsanswered this correctly

Important Questions on Electromagnetic Induction and Alternating Currents

MEDIUM

JEE Main

IMPORTANT

Physics Crash Course JEE Main>Chapter 16 - Electromagnetic Induction and Alternating Currents>Level 2>Q 39

Power factor of an

L - R

series circuit is

0.6

. and that of a

C - R

series circuit is

0.5

. If the element (

L, C

and

R

) of the two circuits are joined in series the power factor of this circuit is found to be

1

. The ratio of the resistance in the

L - R

circuit to the resistance in the

C - R

circuit is

\frac{\sqrt{x}}{4}

, find the value of

x

.

EASY

JEE Main

IMPORTANT

Physics Crash Course JEE Main>Chapter 16 - Electromagnetic Induction and Alternating Currents>Level 3>Q 10

In the given $L C R$ $A C$ circuit, the effective current (in ampere) flowing through the circuit is.

Question Image

HARD

JEE Main

IMPORTANT

Physics Crash Course JEE Main>Chapter 16 - Electromagnetic Induction and Alternating Currents>Level 3>Q 15

An

L C R

series circuit with

100 Ω

resistance is connected to an ac source of

400 V

and angular frequency

300 rad s^{- 1}

. When only the capacitance is removed, the current lags behind the voltage by

60 °

. When only the inductance is removed, the current leads the voltage by

60 °

. The current and power dissipated in the

L C R

circuit is:-

HARD

JEE Main

IMPORTANT

Physics Crash Course JEE Main>Chapter 16 - Electromagnetic Induction and Alternating Currents>Level 3>Q 21

A series

L C R

circuit with

100 Ω

resistance is connected to an ac source of

200 V

with an angular frequency of

{300 rad s}^{- 1}

. If only the capacitor is removed, the current lags behind the voltage by a phase of

60^{\circ}

. If only the inductor is removed, the current leads the voltage by a phase of

60^{\circ}

. The current and the power dissipated in the circuit is