In an ac circuit, the instantaneous values of e.m.f. and current are e – McqOptions

MCQOPTIONS

1.	In an ac circuit, the instantaneous values of e.m.f. and current are e = 200 sin 314 t volt and\[i=\sin \,\left( 314t+\frac{\pi }{3} \right)\] ampere. The average power consumed in watt is [NCERT 1990; RPMT 1997]
A.	200
B.	100
C.	Kinetic energy of electron in n = 2 orbit is less than that in n = 1 orbit
D.	25
Answer» D. 25

Discussion

No Comment Found

Related MCQs

The mass excess for U-235 is
The steady d.c voltage is also known as
The number of oscillations per unit time is
In an ac circuit, the instantaneous values of e.m.f. and current are e = 200 sin 314 t volt and\[i=\sin \,\left( 314t+\frac{\pi }{3} \right)\] ampere. The average power consumed in watt is [NCERT 1990; RPMT 1997]
The frequency for which a \[5\,\mu F\] capacitor has a reactance of \[\frac{1}{1000}\] ohm is given by [MP PET 1997]
In the circuit shown below, what will be the readings of the voltmeter and ammeter [RPMT 1996]
In the adjoining figure the impedance of the circuit will be
A virtual current of 4A and 50 Hz flows in an ac circuit containing a coil. The power consumed in the coil is 240 W. If the virtual voltage across the coil is 100 V its inductance will be
In a certain circuit current changes with time according to \[i=2\sqrt{t}.\] r.m.s. value of current between \[t=2\] to \[t=4s\] will be
When 100 volts dc is supplied across a solenoid, a current of 1.0 amperes flows in it. When 100 volts ac is applied across the same coil, the current drops to 0.5 ampere. If the frequency of ac source is 50 Hz, then the impedance and inductance of the solenoid are [CPMT 1990]