Magnetic Effect of Current · Physics · Class 12

Two long parallel wires kept $$2 \mathrm{~m}$$ apart carry $$3 \mathrm{~A}$$ current each, in the same direction. The force per unit length on one wir...

Assertion (A): The deflecting torque acting on a current carrying loop is zero when its plane is perpendicular to the direction of magnetic field. Rea...

A long straight wire of radius '$$a$$' carries a steady current $$I$$. The current is uniformly distributed across its area of cross-section. The rati...

Two wires carrying currents I1 and I2 lie, one slightly above the other, in a horizontal plane as shown in figure. The region of vertically upward str...

Two parallel conductors carrying current of 4.0 A and 10.0 A are placed 2.5 cm apart in vacuum. The force per unit length between them is -

The magnetic field at the centre of a current carrying circular loop of radius R is B1. The magnetic field at a point on its axis at a distance R from...

A current carrying wire kept in a uniform magnetic field, will experience a maximum force when it is

A straight conducting rod of length l and mass m is suspended in a horizontal plane by a pair of flexible strings in a magnetic field of magnitude B. ...

A constant current is flowing through a solenoid. An iron rod is inserted in the solenoid along its axis. Which of the following quantities will not i...

A proton and an alpha particle move in circular orbits in a uniform magnetic field. Their speeds are in the ratio of 9 : 4. The ratio of radii of thei...

Assertion (A) : When radius of a current carrying loop is doubled, its magnetic moment becomes four times.Reason (R) : The magnetic moment of a curren...

(a) Write the expression for the Lorentz force on a particle of charge $$q$$ moving with a velocity $$\vec{v}$$ in a magnetic field $$\vec{B}$$. When ...