In this post, I am sharing the Class 12 Physics Chapter 14 Short Questions and Numerical Notes PDF for the students of Intermediate Part 2. This chapter’s name is Electromagnetism. Students can download the Class 12 Physics Chapter 14 Short Questions and Numerical Notes PDF on their laptops or mobile. These Physics Notes are for all the boards working under the Punjab Board like Gujranwala Board, Lahore Board, Faisalabad Board, Multan Board, Rawalpindi Board, Sargodha Board, DG Kahn Board, and Sahiwal Board. Here are the complete FSC 2nd Year Physics Notes PDF chapters.
FSC Part 2 Physics Chapter 14 Short Questions and Numerical Notes – Electromagnetism
A current in a conductor produces a magnetic field, which can be calculated using Ampere’s law. Since the current is defined as the rate of flow of charge, what can you conclude about the magnetic field due to stationary charges? What about moving charges?
A stationary charge cannot produce any magnetic field but it produces only the electric field. Whereas a moving charge can produce a magnetic field around the path of its motion similar to the magnetic field produced around the current-carrying conductor.
Two charged particles are projected into a region where there is a magnetic field perpendicular to their velocities. if the charges are deflected in opposite directions, what can you say about them?
When the charge particles are projected across the magnetic field, experience a force. This magnetic force on the charged particle tends to deflect the particles into a curved path. If the charge particles are deflected opposite to each other, then the particles are oppositely charged. That is, if one particle is positively charged then the other must be positively charged.
Why does the picture on a TV screen become distorted when a magnet is brought near the screen?
The picture on TV screen is due to the motion of charged particle (electron). As a magnet is brought close to the TV screen, the path of election is disturbed due to the magnetic force acting on them they deflect and not hitting on the target. Hence the picture on TV sreen is distorted.
How can a current loop be used to determine the presence of a magnetic field in a given region of space?
When a current carrying loop is placed in a uniform magnetic field, at different orientations a torque is produced in a loop. If the loop is deflected in that region then we can say that magnetic field is present due to torque otherwise not.
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