Bsc CSIT Semester 1 – Physics – Unit 2: Electric and Magnetic Field (5 Hrs.)

Describe torque on a current-carrying rectangular loop of wire on a pivot rod when placed in a magnetic field. Give alternative way of increasing the torque on the coil.

A proton is accelerated through a potential difference of 200 V. It then enters a region where there is a magnetic field B = 0.5 T. The magnetic field is perpendicular to the direction of motion of the proton. Find the force experienced by the proton.

How electric and magnetic fields are incorporated in electromagnetic wave? Explain.

Find expression for force on a current-carrying wire in a magnetic field to find the force experienced by a single charge.

A proton is moving with a velocity v = (3 × 105i + 7 × 105k)m/sec in a region wher there is a magnetic field B = 0.4 j T. Find the force experienced by the proton.

Explain the effect of external magnetic field on current carrying loops. Describe torque on La current-carrying rectangular loop of wire on a pivot rod when placed in a magnetic field. Give alternative way of increasing the torque on the coil.

Describe behavior of mobile negative charges in the Hall effect experiment.

A potential difference of 100 V is established between the two plates one being the high potential plate (say A). A proton of charge q = 1.6 × 10-19 C is released from plate B, the another plate. What will be the velocity of the proton when it reaches plate A? The mass of the proton is 1,67-x 10-27 kg

A potential difference of 100 V is established between the two plates one being the high potential plate. An alpha particle of charge q = 3.2 × 10-19 C is released from one plate to another plate. What will be the velocity of the alpha particle when it reaches plate? The mass of the proton is 6.70-x 10-19 kg.

Discuss magnetic dipole moment. What is its effect on atoms and on molecules? Explain.

Two large parallel plates are separated by a distance of 5 cm. The plates have equal but opposite charges that create an electric field in the region between the plate. An α particle ( q = 3.2 × 10-27 kg) is released from the positively charged plate, and it strikes the negatively charged plate 2 × 10-6 second later. Assuming that the electric field between the plates is uniform and perpendicular to the plates. what is the strength of the electric field?

Discuss Magnetic dipole moment. What is its effect on atom and on molecules? Explain.

An electron is placed midway between two fixed charges, q1 = 2.5 × 10-10 C and q2 = 5 × 10-10 C. If the charges are 1 m apart, what is the velocity of the electron when it reaches a point 10cm from q2?