Ch 15 Physics Class 10
Important Complete Notes of Electromagnetism Ch 15 Physics Class 10 written by Professor Sami Ullah Suib. These handwritten notes are very helpful in the preparation of Sound for students of the Physics 10th class and these are according to the paper patterns of all KPK boards.
Summary and Contents:
Topics which are discussed in the notes are given below:
- Definition of electromagnetism
- Definition of magnet
- Properties of magnet
- Types of magnet
- Definition of magnetic field with its quantity and trace out
- Magnetic field due to a saturated steady current carrying wire
- State and Explain Right Hand Rule
- Magnetic field due to a current carrying coil
- Magnetic field due to a solenoid
- Force on a current carrying conductor in a magnetic field
- State and explain Fleming's left hand rules
- Turning effect on a current carrying coil in a magnetic field
- History, Definition, Principle, and Construction of DC motor or direct current motor
- History, Definition, Principle, Construction of moving coil loud speaker.
- History, Definition, Principle, Construction of Electromagnetic Induction.
- Definition of induced current and also write its apparatus
- Definition of Magnetic flux with its Symbol and Figure.
- Factors affecting the magnitude of induced EMF
- Explain Faraday Law of electromagnetic induction with History, Purpose, Statement, Mathematical form.
- Explain Len's Law with History, Purpose, Statement, Mathematical form.
- Relation between direction of induced EMF of law of conservation of energy.
- Explain AC Generator or Alternating Current Generator with History, Purpose, Statement, Mathematical form.
- Definition of mutual induction with its Symbol, Unit, Mathematical form, and Explanation.
- Definition of Transformer with its history, Purpose, Principle, Construction, and Working, Formulas.
- Types of Transformer: Step-Up Transformer and Step Down Transformer.
- Definition of Step-Up Transformer with its Uses.
- Definition of Step-Down Transformer with its Uses.
- Differentiate between Electric and Magnetic Fields
- Can an electron at rest be set into motion with a magnetic field?
- Which is more likely to show deflection in compass needle, AC current to OR DC current? Explain.
- A constant magnetic field is applied to a current carrying conductor. What angle should the wire make with the field for the field for the force to be (a) Maximum (b) Minimum.
- Why does a compass needle points North?
- How can a magnetic field be used to generate electric current?
- What would happen if we use a sleeper ring to drive a DC motor?
- The primary coil of a transformer is connected to a DC battery is an EMF induced in the secondary coil? Why?
- Solved Numerical of Electromagnetism Ch 15 Physics Class 10 in KPK Boards
- A 1.5 m long wire carries a current of 5 A, at right angle to a uniform magnetic field of 0.04 T. Determine the force exerted on the wire.
- A wire carrying a direct current of 10.0 A is suspended 5.0 m east between a house and a garage perpendicular to the Earth's magnetic field of 5.0 x 105 T. What is the magnitude of the force that acts on the conductor?
- A 10 cm wire at 30° to uniform magnetic field of 0.06 T is exerted by a force of 0.024 N. What is the current flowing through the wire?
- If the current through the primary coil changes from -5 A to + 5 A in 0.05 s, such that the induced emf is 2.8 V. What is the mutual inductance?
- A transformer connected to a 120 V AC line is to supply 9600 V for a neon sign. (3) What is the ratio of secondary to primary turns of the transformer? (b) If the transformer consisted of 275 primary windings, how many secondary windings would there be?
- How many turns would you want in the secondary coil of a transformer having 400 turns in the primary, if it were to reduce the voltage from 220 V AC to 3.0 V AC?
- A transformer steps down a main supply of 220 V AC to operate a 12 V AC lamp. Calculate the turns ratio of the windings.