Electric Charges
When object of the same interest comes into contact with other object, is it charging by conduction or Induction?
Conduction
What is the unit of energy density?
J/m3
Is magnetic single or dipoles?
Dipoles
In Root mean square, do we take square root of the mean?
yes
From what point does rays originate?
Every Point
A substance has atoms loosely bound, can the atoms move from one place to another? If yes, why?
Yes, because in conductors electricity can flow easily.
Cp = C1+C2+C3, is this net or total capacitance?
Net Capacitance
How can you find the direction of the magnetic field?
Right Hand Rule (RHS)
What is the unit of AC power supply?
Radians
Are the angle of Incidence and reflection same?
No
If the total charge of an electron is 5.0 C and total volume is 29 m3 , find the volume of the charge?
0.217c/m3
The capacitor has a charge of 8.0 uC and voltage of 12 V. Find the capacitor?
0.67F
Find the force, when velocity is 0.90 m/s and magnetic field is 0.52T?
7.5 x 10-20 N
Find Vr, when Vo is 60V, rate is 35Hz and time is 10s.
10.4V
Find the focal length if the radius is 10m?
5m
The two charges of a substance are 2.0 x 10-3 and 3.8 x 10-8 and are 10 m away from the point of charge. Find the electric field?
1.79 x 10-7 v/m
Find the net capacitance of 3.0 uF, 5.0 uF, 7.0 uF?
15.0 uF
Find the angle, when force is 1500N, length is 4.1m, current is 60A and magnetic strength is 80T?
4.37
Derive AC voltage equation to find V initial?
Vo = Vt/sin(wt)
Find the refractive index, if speed in vacuum is 40m/s and speed in light is 10m/s?
4m/s
Explain how can you find dq from equation x = 2/L and what does it mean?
dq = xdL, small protons of charge
Find the total capacitance, if the capacitance are 3.0 F, 5.0 F and 7.0 F?
1.48F
What is the speed, if magnetic field is 0.56T and force is 8.0 x 10-9N?
1.43 x 10-8m/s
Find inductive reactance if rate is 20Hz and inductance is 2.4H?
8.33 ohms
Derive Malus Law equation to find Io?
Io = I/(cos2theta)