Quick Revision Study Materials for Class XII

Electrostatics Current Electricity Thermoelectricity Electromagnetics Electromagnetic Induction AC Circuits Magnetism Ray Optics Physical Optics Atomic Physics Nuclear Physics Semiconductor Devices Communication System Related articles Reference Books in Physics Suggested by CBSE for class XI and XII students New Sample Papers in Physics for Class XII and Science for X  

Direction of magnetic field due to a current carrying conductor

“How do we know the direction of magnetic field around the current carrying conductor?” Asked Nikhil Incoming search terms:direction of magnetic field around a current carrying conductorDIRECTION OF MAGNETIC FIELD IN CURRENT CARRYING CONDUCTORmagne...

Electric Fuse – A Safety Device

  Electric Fuse is a Safety device It works on the principle of Joule’s law of heating It consists of a fuse wire made of an alloy of tin and lead, which melts and breaks the circuit whenever current in the circuit exceeds safe limits due to overloading or short circuit

Numerical Problems for Practice – Current electricity

At room temperature (27 oC) resistance of a heating element is 100 ohm. What is the temperature of the element if the resistance is found to be 117 ohm. Given, temperature coeff. of resistance of the material is 1.70 x 10 -14 oC-1 The ends of a resistance are connected to 19 cells in series, … Continue reading Numerical Problems for Practice – Current electricity

Electricity Practice Questions for CBSE

1. Define electric potential difference? 2. Why is an ammeter connected in series in a circuit? 3. Why is a voltmeter connected in parallel in a circuit? 4. State the law that governs the strength of the current passing through a metallic conductor when a p.d is applied across its end. Illustrate this law graphically? … Continue reading Electricity Practice Questions for CBSE

Class X Physics QUESTION BANK(Magnetic Effects of Current)

One mark Questions: 1. How can you show that the magnetic field produced by a given electric current in the wire decreases as the distance from the wire decreases? 2. What is the advantage of the third wire of earth connection in domestic appliances? 3. What constitutes the field of a magnet? 4. What is … Continue reading Class X Physics QUESTION BANK(Magnetic Effects of Current)

Class X Physics QUESTION BANK(Magnetic Effects of Current)

One mark Questions: 1. How can you show that the magnetic field produced by a given electric current in the wire decreases as the distance from the wire decreases? 2. What is the advantage of the third wire of earth connection in domestic appliances? 3. What constitutes the field of a magnet? 4. What is … Continue reading Class X Physics QUESTION BANK(Magnetic Effects of Current)