Question 2 :
A positively charged particle projected towards West is deflected towards North by a Magnetic Field. The direction of Magnetic Field is
Question 5 :
It is established that an electric current through a metallic conductor produces a magnetic field around it. Is there a similar magnetic field produced around a thin beam of moving neutrons?
Question 6 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19cf2273b230584979b72.JPG ' />
In the above arrangement if the key is taken out (the circuit is made open) and magnetic field lines are drawn over the horizontal plane ABCD, the lines are
Question 7 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19cf7273b230584979b78.JPG ' />
In the above figure, AB is a current carrying conductor in the plane of the paper. What are the directions of magnetic fields produced by it at point P.
Question 8 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19cf8273b230584979b79.JPG ' />
In the above figure, AB is a current carrying conductor in the plane of the paper. Given $r_1 > r_2$, where will the strength of the magnetic field be larger ?
Question 11 :
For a current in a long straight solenoid N- and S-poles are created at the two ends. Among the following statements, the incorrect statement is
Question 12 :
Which of the following property of a proton can change while it moves freely in a Magnetic Field?
Question 14 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19cf6273b230584979b77.JPG ' />
In the above figure, AB is a current carrying conductor in the plane of the paper. What are the directions of magnetic fields produced by it at point Q.
Question 15 :
State TRUE or FALSE. The field at the centre of a long circular coil carrying current will be parallel straight lines.
Question 17 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19cf1273b230584979b71.png' />
In the above arrangement, a circular loop placed in a plane perpendicular to the plane of paper carries a current when the key is ON. The current as seen from points A and B (in the plane of paper and on the axis of the coil) is anti clockwise and clockwise respectively. The magnetic field lines point from B to A. The N-pole of the resultant magnet is on the face close to
Question 18 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19cf2273b230584979b72.JPG ' />
In the above arrangement if the key is taken out (the circuit is made open) and magnetic field lines are drawn over the horizontal plane ABCD, the lines are
Question 19 :
How many times does AC used in India change direction in one second ?
Question 20 :
An electric oven of 2 kW power rating is operated in a domestic electric circuit (220V) that has a current rating of 5 A. Will the fuse blow off?
Question 21 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19cf7273b230584979b78.JPG ' />
In the above figure, AB is a current carrying conductor in the plane of the paper. What are the directions of magnetic fields produced by it at point P.
Question 22 :
Which of the following property of a proton can change while it moves freely in a Magnetic Field?
Question 23 :
Choose the incorrect statement from the following regarding magnetic lines of field
Question 24 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19cf8273b230584979b79.JPG ' />
In the above figure, AB is a current carrying conductor in the plane of the paper. Given $r_1 > r_2$, where will the strength of the magnetic field be larger ?
Question 25 :
A coil of insulated copper wire is connected to a galvanometer. What will happen if a bar magnet is held stationary inside coil?
Question 26 :
A coil of insulated copper wire is connected to a galvanometer. What will happen if a bar magnet is held stationary inside coil?
Question 27 :
The strength of magnetic field inside a long current carrying straight solenoid is
Question 28 :
State TRUE or FALSE. Dry cell battery, car battery and DC generator are the sources of direct current.
Question 30 :
An electric oven of 2 kW power rating is operated in a domestic electric circuit (220V) that has a current rating of 5 A. Will the fuse blow off?
Question 31 :
A rectangular coil of copper wire is rotated in a magnetic field. The direction of induced current changes once in each
Question 32 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19cf5273b230584979b75.png' />
In the above figure, a constant current flows in a horizontal wire in the plane of the paper from east to west. The direction of magnetic field at a point will be North to South
Question 33 :
A magnetic compass shows a deflection when placed near a current carrying wire. How will the deflection of the compass get affected if the current in the wire is increased ?
Question 34 :
Consider a circular loop of wire lying in the plane of the table. Let the current pass through the loop clockwise. Apply the right hand rule to find out the direction of magnetic field inside the loop.
Question 35 :
The strength of magnetic field inside a long current carrying straight solenoid is
Question 36 :
The most important safety method used for protecting home appliances from short circuiting or overloading is
Question 37 :
State TRUE or FALSE. An electric generator works on the principle of electromagnetic induction.
Question 39 :
At the time of short circuit, the current in the circuit
Question 40 :
State TRUE or FALSE. A wire with a green insulation is usually the live wire of an electric supply
Question 41 :
State TRUE or FALSE. An electric motor converts mechanical energy into electrical energy.
Question 45 :
How many times does AC used in India change direction in one second ?
Question 46 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19cf5273b230584979b75.png' />
In the above figure, a constant current flows in a horizontal wire in the plane of the paper from east to west. The direction of magnetic field at a point will be North to South
Question 48 :
A positively charged particle projected towards West is deflected towards North by a Magnetic Field. The direction of Magnetic Field is
Question 49 :
It is established that an electric current through a metallic conductor produces a magnetic field around it. Is there a similar magnetic field produced around a thin beam of moving alpha particles?
Question 50 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19cf3273b230584979b73.JPG ' />
In the arrangement shown in above figure there are two coils wound on a non-conducting cylindrical rod. Initially the key is not inserted. Then the key is inserted and later removed . Then
