Question

In a LCR series circuit, the potential difference
between the terminals of the inductance is 60 V,
between the terminals of the capacitor is 30 V
and that across the resistance is 40V. Then,
supply voltage will be equal to
(a) 50 V (b) 70 V
(c) 130 V (d) 10 V

Answer 1

Answer:

Given,

V

R

=40V

V

L

=60V

V

C

=30V

From the vector diagram,

V=V

R

+j(V

L

−V

C

)

V=40+j(60−30)

V=40+30j

Magnitude,

V=

(40)

2

+(30)

2

=

2500

V

V=50V

Answer 2

Answer:

$a) \: is \: answer$

Explanation:

In a LCR series circuit, the potential difference

between the terminals of the inductance is 60 V,

between the terminals of the capacitor is 30 V

and that across the resistance is 40V. Then,

supply voltage will be equal to

(a) 50 V✓✓

(b) 70 V

(c) 130 V (d) 10 V