Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions)
A long insulated copper wire is closely wound as a spiral of N turns. The spiral has inner radius a and outer radius b. The spiral lies in the xy-plane and a steady current I flows through the wire. The z-component of the magnetic field at the centre of the spiral is
18
Oct
A long insulated copper wire is closely wound as a spiral of N turns. The spiral has inner radius a and outer radius b. The spiral lies in the xy-plane and a steady current I flows through the wire. The z-component of the magnetic field at the centre of the spiral is are held by [...]
A steady current I goes through a wire loop PQR having shape of a right angle triangle with PQ = 3 x, PR = 4 x and QR = 5 x. If the magnitude of the magnetic field at P due to this loop is k ( μ0I/48πx ), find the value of K.
18
Oct
A steady current I goes through a wire loop PQR having shape of a right angle triangle with PQ = 3 x, PR = 4 x and QR = 5 x. If the magnitude of the magnetic field at P due to this loop is k ( μ0I/48πx ), find the value of K. A [...]
Two identical wires A and B , each of length ‘l’, carry the same current I. Wire A is bent into a circle of radius R and wire B is bent to form a square of side ‘a’ . If BAandBB are the values of magnetic field at the centres of the circle and square respectively , then the ratio BA/BB is :
18
Oct
Two identical wires A and B , each of length ‘l’, carry the same current I. Wire A is bent into a circle of radius R and wire B is bent to form a square of side ‘a’ . If BAandBB are the values of magnetic field at the centres of the circle and square [...]
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are held by insulating threads of length L and are in equilibrium as shown in the gigure ,
both with current I ,
each of length 'l' ,
Two identical wires A and B ,
Two long current carrying thin wires ,
With threads making an angle θ with the vertical . If wires have mass λ per unit length then the value of I is : ,
Two long current carrying thin wires , both with current I, are held by insulating threads of length L and are in equilibrium as shown in the gigure , With threads making an angle θ with the vertical . If wires have mass λ per unit length then the value of I is :
17
Oct
Two long current carrying thin wires , both with current I, are held by insulating threads of length L and are in equilibrium as shown in the gigure , With threads making an angle θ with the vertical . If wires have mass λ per unit length then the value of I is : are [...]
A charge Q is uniformly distributed over the surface of non – conducting disc of radius R. The disc rotates about an axis perpendicular to its plane and passing through its centre with an angular to its plane and passing through its centre of the disc. If we keep both the amount of charge placed on the disc and its angular velocity to be constant and vary the radius of the disc then the variation of the magnetic induction at the centre of the disc will be represented by the figure:
17
Oct
A charge Q is uniformly distributed over the surface of non – conducting disc of radius R. The disc rotates about an axis perpendicular to its plane and passing through its centre with an angular to its plane and passing through its centre of the disc. If we keep both the amount of charge placed [...]
The half-life of a radioactive decay is x times its mean life. The value of x is
17
Oct
The half-life of a radioactive decay is x times its mean life. The value of x is The half-life of a radioactive decay is x times its mean life. The value of x is October 17, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
A cuurent I flows in an infinetly long wire with cross section in the form of a semicircular ring of radius R. THe magnitude of the manetic induction along its axis is
17
Oct
A cuurent I flows in an infinetly long wire with cross section in the form of a semicircular ring of radius R. THe magnitude of the manetic induction along its axis is A cuurent I flows in an infinetly long wire with cross section in the form of a semicircular ring of radius R. THe [...]
The activity of a radioactive element decreases to one-third of the original activity A0 in a period of 9 years. After a further lapse of 9 years, its activity will be
17
Oct
The activity of a radioactive element decreases to one-third of the original activity A0 in a period of 9 years. After a further lapse of 9 years, its activity will be its activity will be The activity of a radioactive element decreases to one-third of the original activity A0 in a period of 9 years. [...]
92U238 absorbs a neutron. The product emits an electron. This product further emits an electron. The result is
17
Oct
92U238 absorbs a neutron. The product emits an electron. This product further emits an electron. The result is 92U238 absorbs a neutron. The product emits an electron. This product further emits an electron. The result is October 17, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
Two long parallel wires at a distance 2 d apart. They carry steady equal currents flowing out of the plane of the paper as shown. The variationn of the magnetic field along the line XX’ is given by
17
Oct
Two long parallel wires at a distance 2 d apart. They carry steady equal currents flowing out of the plane of the paper as shown. The variationn of the magnetic field along the line XX’ is given by Two long parallel wires at a distance 2 d apart. They carry steady equal currents flowing out [...]