Home
Class 12
PHYSICS
An alternating emf of 110 V is applied t...

An alternating emf of 110 V is applied to a circuit containing a resistance R of `80 Omega` and an inductor L in series. The current is found to lag behind the supply voltage by an angle `theta=tan^^(1) (3//4)`. Find the :
Impedance of the circuit

A

`40Omega `

B

`30Omega `

C

`50Omega `

D

`10sqrt(5) Omega `

Text Solution

Verified by Experts

The correct Answer is:
C
Impedance of the circuit, `Z= sqrt(R^(2)+X_(L)^(2))`
`= sqrt(40^(2)+30^(2)) " " ( :. X_(L) = 30Omega)`
`=50Omega`
Promotional Banner

Similar Questions

Explore conceptually related problems

An alternating emf of 110 V is applied to a circuit containing a resistance R of 80 Omega and an inductor L in series. The current is found to lag behind the supply voltage by an angle theta=tan^(1) (3//4) . Find the : Current flowing in the circuit

An alternating emf of 110 V is applied to a circuit containing a resistance R of 80 Omega and an inductor L in series. The current is found to lag behind the supply voltage by an angle theta=tan^(1) (3//4) . Find the : Inductive reactance

An alternating emf of 110 V is applied to a circuit containing a resistance R of 80 Omega and an inductor L in series. The current is found to lag behind the supply voltage by an angle theta=tan^(1) (3//4) . Find the : If the inductor has a coefficient of self inductance of 0.1 H, what is the frequency of the applied emf ?

An alternating emf of 110 V is applied to a circuit containing a resistance R of 80Omega and an inductor L in series. The current is found to lag behind the supply voltage by an angle theta=tan^(-1)(3//4) . Find the : (i) Inductive reactance (ii) Impedance of the circuit (iii) Current flowing in the circuit (iv) If the inductor has a coefficient of self inductance of 0.1 H. What is the frequency of the applied emf?

An alternating e.m.f of 220V is applied to a circuit containing a resistor R having resistance of 160Omega and a capacitor .C. in series. The current is found to lead the supply voltage by an angle theta= tan^(-1) (3//4) Calculate: Impedance of the circuit

An alternating e.m.f of 220V is applied to a circuit containing a resistor R having resistance of 160Omega and a capacitor .C. in series. The current is found to lead the supply voltage by an angle theta= tan^(-1) (3//4) If the frequency of the applied e.m.f is 50Hz, what is the value of the capacitance of the capacitor .C.?

An alternating e.m.f of 220V is applied to a circuit containing a resistor R having resistance of 160Omega and a capacitor .C. in series. The current is found to lead the supply voltage by an angle theta= tan^(-1) (3//4) Calculate: The capacitive reactance,

An alternating e.m.f of 220V is applied to a circuit containing a resistor R having resistance of 160Omega and a capacitor .C. in series. The current is found to lead the supply voltage by an angle theta= tan^(-1) (3//4) Calculate: Current flowing in the circuit

An alternating emf of 200V, 50Hz is applied to an L-R circuit, having a resistances R of 10Omega and an inductance L of 0.05H connected in series. Calculate: Current flowing in the circuit

An alternating emf of 200V, 50Hz is applied to an L-R circuit, having a resistances R of 10Omega and an inductance L of 0.05H connected in series. Calculate: Impedance