Question

4. A charged particle is projected into a uniform B-field. Its velocity vector is perpendicular to the B-field vector. What type of path will the particle travel? Neglect gravity A flexible coil 25 cm long is shaped into a circle with its face perpendicular to a 0.25 T magnetic field. If the coil is then pulled to collapse the area in 2.0 ms, what emf is induced in the coil? 5. A car antenna is 1.5 m long. The car is moving at 15 m/s in a region where the earth's magnetic field is 4.5 x 10 T and is directed perpendicular to the length of the antenna. What emf is induced in the antenna? 6. There is a rectangular loop of wire 20 cm wide and 30 cm long. When the rectangular loop makes an angle of 40 with a magnetic field, a flux penetrating the loop is 0.01 Wb The magnetic field is approximately 7. 8. The instantaneous emf produced by a simple ac generator is a maximum when the angular displacement of the loop s an 9. A coil of wire of area 0.3 m2 has 90 turns of wire and is suspended with its plane perpendicular to a uniform magnetic field. An emf of -2 V is induced when the coil is flipped parallel to the field in 0.4 s. The flux density of the field is approximately A 12-uF capacitor is connected to a 350-2 resistor and a 12-V battery in series. What is the current in the circuit after 2.1 ms? 10.

Answer 1

Q.4. When a charged particle enters in a magnetic field with velocity perpendicular to the magnetic field, then it feels a magnetic force which changes its direction of mation and particle starts moving in a CIRCULAR path.