Question Answers
Sahay Sir > Question Answers
A plane rectangular loop is placed in a magnetic field. The emf induced in the loop due to this field is ε1 whose maximum value is εim. The loop was pulled out of the magnetic field at a variable velocity. Assume that B→ is uniform and constant ε1 is plotted against t as shown in the graph. Which of the following are/is correct statement(s):
10
Sep
A plane rectangular loop is placed in a magnetic field. The emf induced in the loop due to this field is ε1 whose maximum value is εim. The loop was pulled out of the magnetic field at a variable velocity. Assume that B→ is uniform and constant ε1 is plotted against t as shown in [...]
In the graph varition of magnetic field with time “t” applied perpendicular to the plane of the plane of the ring is shown :
10
Sep
In the graph varition of magnetic field with time “t” applied perpendicular to the plane of the plane of the ring is shown : In the graph varition of magnetic field with time "t" applied perpendicular to the plane of the plane of the ring is shown : September 10, 2020 Category: Uncategorised (JEE Advanced [...]
A conducting loop rotates with constant angular velocity about its fixed diameter in a uniform magnetic field whose direction is perpendicular to that fixed diameter.
10
Sep
A conducting loop rotates with constant angular velocity about its fixed diameter in a uniform magnetic field whose direction is perpendicular to that fixed diameter. A conducting loop rotates with constant angular velocity about its fixed diameter in a uniform magnetic field whose direction is perpendicular to that fixed diameter. September 10, 2020 Category: Uncategorised [...]
The magnetic field in the cylindrical region shown in the figure increases at a constant rate of 20 m T/s. Each side of the square loop ABCD has a length of 1 cm and resistance of 4 ohm. Find the current in the wire AB if the switch S is closed
10
Sep
The magnetic field in the cylindrical region shown in the figure increases at a constant rate of 20 m T/s. Each side of the square loop ABCD has a length of 1 cm and resistance of 4 ohm. Find the current in the wire AB if the switch S is closed A conducting loop having [...]
Some magnetic flux is changed from a coil of resistance 10 Ω. As a result, an induced current is developed it, which varies with time as shown in Fig. Find the magnitude of the change in flux through the coil in weber.
10
Sep
Some magnetic flux is changed from a coil of resistance 10 Ω. As a result, an induced current is developed it, which varies with time as shown in Fig. Find the magnitude of the change in flux through the coil in weber. an induced current is developed it Some magnetic flux is changed from a [...]
A hundred turns of insulated copper wire are wrapped around an iron cylinder of area 1×10^−3 m^2 and are connected to a resistor. The total resistance in the circuit is 10 ohms. If the longitudinal magnetic induction in the iron changes from 1 weber m−2, in one direction to 1 weber m−2 in the opposite direction, how much charge flows through the circuit
10
Sep
A hundred turns of insulated copper wire are wrapped around an iron cylinder of area 1×10^−3 m^2 and are connected to a resistor. The total resistance in the circuit is 10 ohms. If the longitudinal magnetic induction in the iron changes from 1 weber m−2, in one direction to 1 weber m−2 in the opposite [...]
A small coil is introduced between the poles of an electromagnet so that its axis coincides with the magnetic field direction. The number of turns is n and the cross sectional area of the coil is A. When the coil turns through 180 o about its diameter, the charge flowing through the coil is Q. The total resistance of the circuit is R. What is the magnitude of the magnetic induction?
10
Sep
A small coil is introduced between the poles of an electromagnet so that its axis coincides with the magnetic field direction. The number of turns is n and the cross sectional area of the coil is A. When the coil turns through 180 o about its diameter, the charge flowing through the coil is Q. [...]
A conducting loop having a capacitor is moving outward from the magnetic field then which plate of the capacitor will be positive
10
Sep
A conducting loop having a capacitor is moving outward from the magnetic field then which plate of the capacitor will be positive A conducting loop having a capacitor is moving outward from the magnetic field then which plate of the capacitor will be positive September 10, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma [...]
A square coil ABCD lying in x-y plane with its centre at origin. A long straight wire passing through origin carries a current i = 2t in negative z-direction. The induced current in the coil is
10
Sep
A square coil ABCD lying in x-y plane with its centre at origin. A long straight wire passing through origin carries a current i = 2t in negative z-direction. The induced current in the coil is A square coil ABCD lying in x-y plane with its centre at origin. A long straight wire passing through [...]
A circular coil and a bar magnet placed nearby are made to move in the same direction. The coil covers a distance of 1m in 0.5sec and the magnet a distance of 2 m in 1 sec. The induced emf produced in the coil
10
Sep
A circular coil and a bar magnet placed nearby are made to move in the same direction. The coil covers a distance of 1m in 0.5sec and the magnet a distance of 2 m in 1 sec. The induced emf produced in the coil The current i in an induction coil varies with time according [...]