Electric generator consists of a circular coil of wire of radius 4.0×10−2 m , with 20 turns. the coil is located between the poles of a permanent magnet in a uniform magnetic field, of magnitude 5.0×10−2 t . the b field is orientated perpendicular to the axis of rotation. the ends of the coil are connected via sliding contacts across a resistor of resistance 1.5 ω. the peak current measured through the resistor is 3.0×10−3 a . part a what is the angular frequency ω at which the coil is rotating

0.89524 rad/s

Explanation:

N = Number of turns = 20

r = Radius of coil of wire =

B = Magnetic field =

I = Current =

A = Area of coil =

R = Resistance =

Maximum current in a generator is given by

The angular frequency is 0.89524 rad/s

firearm identification is the process of analyzing the bullets and cartridge cases left at a crime scene to determine if they came from a particular firearm. marks on the bullets and cartridges may be common to every firearm of that type. these are called class characteristics.

an electric circuit