Rationalised 2023-24
Physics
198
 Physical quantity
Symbol
Dimensions
Unit
Remarks
rms voltage
V
[M L
2 T
–3 A
–1]
V
V 
= 
2
vm
, 
v m 
is 
the
amplitude of the ac voltage rms current
I
[
 A]
A
I = 
2
im
, im is the amplitude of
the ac current Reactance:
     Inductive
XL
[M
 L
2 T
–3 A
–2]
XL =  L
     Capacitive
XC
[M
 L
2 T
–3 A
–2]
XC = 1/ C
Impedance
Z
[M
 L
2 T
–3 A
–2]
Depends 
on 
elements
present in the circuit Resonant
wr or w0
[T
–1]
Hz
w0 
LC
1

 for a
frequency
series RLC circuit
Quality factor
Q
Dimensionless
0
0
1
L
Q
R
C R
ω
ω
=
=
 for a series
RLC circuit