I believe the answer is C
Answer:
option (3)
Explanation:
According to the ideal gas equation
PV = nRT
where, P is pressure, V is volume, R is gas constant and T be the absolute temperature.
At constant volume,
P ∝ T
If the temperature is doubled, the pressure also doubled.
As volume is constant, so the density is also constant.
So, the pressure is doubled and the density remain constant.
Answer: 363 Ω.
Explanation:
In a series AC circuit excited by a sinusoidal voltage source, the magnitude of the impedance is found to be as follows:
Z = √((R^2 )+〖(XL-XC)〗^2) (1)
In order to find the values for the inductive and capacitive reactances, as they depend on the frequency, we need first to find the voltage source frequency.
We are told that it has been set to 5.6 times the resonance frequency.
At resonance, the inductive and capacitive reactances are equal each other in magnitude, so from this relationship, we can find out the resonance frequency fo as follows:
fo = 1/2π√LC = 286 Hz
So, we find f to be as follows:
f = 1,600 Hz
Replacing in the value of XL and Xc in (1), we can find the magnitude of the impedance Z at this frequency, as follows:
Z = 363 Ω
Answer:
EMF = 187.5 volts
Explanation:
As per Faraday's law of electromagnetic induction we know that rate of change in the flux will induce EMF
so we can say
now we will have
So the induced EMF in the coil will be 187.5 Volts