It consists of a coil in a constant magnetic field. The current in the coil is the current being measured, and changes the magnetic moment of the coil (given by IA where I is current and A is loop area). This coil's magnetic moment feels a torque in this external magnetic field that moves a needle that tells the observer what the current must be, since the external field is known by the designers of the galvanometer.
Answer:
Explanation:
dipole moment = qs = q x s
= charge x charge separation
charge = q
separation between charge = s
half separation l = s / 2
dipole has two charges + q and - q separated by distance s .
Potential at distance x along x axis due to + q
Potential at distance x along x axis due to - q
Total potential
v = v₁ + v₂
Potential at distance y along y axis due to + q
Potential at distance y along y axis due to - q
Total potential
v = v₁ + v₂
Answer:
0.69 ohm
Explanation:
Heat generated per second, H = 50 cal/s
Potential difference, V = 12 V
Let R is the resistance of coil.
The formula for the heat is given by
R = 0.69 ohm
Ok so if each side is 4.53 cm, we can multiply 4.53 x 4.53 x 4.53 to get the volume (since v= l x w x h). Density equals mass/volume, so
519 g/4.53 cm
114.57 g/cm^3 (since none of the units cancel)
4ms I'm just guessing by the way