BCECE SERIES Physics
Alternating Current
7 previous year questions.
Volume: 7 Ques
Yield: Medium
High-Yield Trend
2
2023 3
2010 1
2009 1
2003 Chapter Questions 7 MCQs
01
PYQ 2003
medium
physics ID: bcece-20
For a series LCR circuit, the phase difference between current and voltage at the condition of resonance will be :
1
2
3
zero
4
nothing can be said
02
PYQ 2009
easy
physics ID: bcece-20
An LCR series circuit, connected to a source , is at resonance. Then
1
the voltage across R is zero
2
the voltage across R equals applied voltage
3
the voltage across C is zero
4
the voltage across L equals applied voltage
03
PYQ 2010
easy
physics ID: bcece-20
A coil of resistance R and inductance L is connected to a battery of emf E volt. The final current in the coil is
1
2
3
4
04
PYQ 2010
medium
physics ID: bcece-20
A capacitor of suitable capacitance can be used in an circuit in place of the choke coil. A capacitor blocks DC and allows AC only.
1
Both assertion and reason are correct and reason is the correct explanation of assertion
2
Both assertion and reason are true but reason is not the correct explanation of assertion
3
Assertion is true but reason is false
4
Assertion is false but reason is true
05
PYQ 2010
medium
physics ID: bcece-20
In an AC circuit, V and i are given by V = 100 sin (100t) volt and i = 100 sin amp .The power dissipated in the circuit is
1
W
2
2.5 W
3
5 k W
4
10 W
06
PYQ 2023
easy
physics ID: bcece-20
What is the r.m.s value of an alternating current which when passed through a resistor produces heat, which is four times that produced by a current of 2A in the same resistor?
1
2A
2
A
3
4A
4
8A
07
PYQ 2023
medium
physics ID: bcece-20
An r.m.s voltage of 220 V is applied across a series circuit having a resistance of 100 ohm and an impedance of 22 ohm. the power consumed is:
1
100 W
2
1000 W
3
10 W
4
10000 W