Question

1) Find the total resistance in the circuit. 52 min quim 10211 102 M W 1022 2) An electron is moving to the right in a magnetic field that points upward. What is the direction of the magnetic force? 3) A typical MRI solenoid has a length of about 1 meter and a diameter of about 1 meter. A typical field inside such a solenoid is about 1 T. How many turns of wire must the solenoid have to produce this field if the largest current the wire can carry is 100 A? 4) The sun emits streams of charged particles (in what is called the solar wind) that move toward the earth at very high speeds. A proton is moving toward the equator of the earth at a speed of 500 km/s. At this point, the earth is 5.0 x 10$T directed parallel to the earth's surface. What are the direction and magnitude of the force on the proton?

Answer 1

avastion ! Ry= ur Aire R₂8 Rs are in parallel Rear cloxio loti len 52 a sa M lor ☺ Req, z = R + Reqe = 52 +5.2 = lor 10.2 resotance ( Req) :- Equivalent so & Total | Req = 52 Thus, Equivalent Resistance ( Req) = sa Question a) = f (directions B = 7 (direction) using the formula E = q (u x B) since change is negative (election) E = - I (into the page) Magnetic force into the page into the force (F) is page Thus, the magnetic