Class 10 Physics Chapter 6 Question Answer

Important Class 10 Physics Chapter 6 Question Answer written by Honorable Mr. Qamar Jamal Suib. These computerized notes are very helpful in the preparation of Sound for students of the 10th class Physics and these are according to the paper patterns of all Punjab boards.

• Here are the detailed Class 10 Physics Chapter 6 Question Answer to help you prepare for your exams.
• Important Multiple Choice Questions (MCQs) with correct Answers of Chapter No. 15: Electromagnetism in Physics class 10th Urdu Medium.
• Important Short Questions with Correct Answers of Chapter No. 15: Electromagnetism in Physics class 10th Urdu Medium.
• "The type of temporary magnet, which is created when current flows through a coil, is called an electromagnet".
• The direction of the field produced by a coil due to the flow of conventional current can be found with the help of right hand grip rule stated as:
• "If we grip the coil with our right hand by curling our fingers in the direction of the conventional current, our thumb will indicate the north pole of the coil".
• FORCE ON A CURRENT - CARRYING CONDUCTOR PLACED IN A MAGNETIC FIELD:
• We know that electric current produces a magnetic field similar to that of a permanent magnet. Since a magnetic field exerts force on a permanent magnet, it implies that current carrying wire should also experience a force when placed in a magnetic field.
• Michael Faraday discovered that the force on the wire is at right angles to both the direction of the magnetic field and the direction of the current. The force is increased if:
• The current in the wire is increased, Strength of magnetic field is increased, The length of the wire inside the magnetic field is increased
• Determining the direction of force:
• Faraday's description of the force on a current-carrying wire does not completely specify the direction of force because the force can be towards left or towards right. The direction of the force on a current-carrying wire in a magnetic field can be found by using Fleming's left hand rule stated as:
• "Stretch the thumb, forefinger and the middle finger of the left hand mutually perpendicular to each other. If the forefinger points in the direction of the magnetic field, the middle finger in the direction of the current, then the thumb would indicate the direction of the force acting on the conductor".
• TURNING EFFECT ON A CURRENT-CARRYING COIL IN A MAGNETIC FILED:
• If instead of a straight conductor, we place a current-carrying loop inside the magnetic field, the loop will rotate due to the torque acting on the coil. This is also the working principle of electric motors. Consider a rectangular coil of wire with sides PQ and RS, lying perpendicular to the field, placed between the two poles of a permanent magnet. Now if the ends of the coil are connected with the positive and negative terminals of a battery, a current would start flowing through the coil. The current passing through the loop enters from one end of the loop and leaves from the other end.
• D.C. MOTOR: the simple coil placed in a magnet cannot rotate more than 90°. The forces push the PQ side of the coil up and the RS side of the loop down until the loop reaches the vertical position. In this situation, plane of the loop is perpendicular to the magnetic field and the net force on the coil is zero. 
• If you're looking for comprehensive 10th class physics chapter 6 question answer, you've come to the right place.
• Electric motor, the coil, called the armature, is made of many loops mounted on a shaft or axle. The magnetic field is produced either by permanent magnets or by an electromagnet, called a field coil. The torque on the armature, and, as a result, the speed of the motor, is controlled by varying the current through the motor. 
• The total force acting on the armature can be increased by
• Increasing the number of turns of the coil
• Increasing the current in the coil
• Increasing the strength of the magnetic field
• Increasing the area of the coil