An infinitely long straight conductor carries a current of 5A as shown. An electron is moving with a speed of $10^5 m/s$ parallel to the conductor. The perpendicular distance between the electron and the conductor is 20 cm at an instant. Calculate the magnitude of the force experienced by the electron at that instant.
The velocity of a small ball of mass M and density d, when dropped in a container filled with glycerin becomes constant after some time. If the density of glycerin is $\frac {d}{2}$, then the viscous force acting on the ball will be:
Two charged spherical conductors of radius $R_1$ and $R_2$ are connected by wire. Then the ratio of surface charge densities of the spheres $\frac {\sigma_1}{\sigma_2}$ is:
The value of power dissipated across the Zener diode ($V_Z = 15 V $) connected in the circuit as shown in the figure is $x \times 10^{-1} Watt$. The value of x, to the nearest integer, is _ _ _ _ .
A student read 30 pages of a science magazine on Monday and $\frac {1}{8}$ of the magazine on Tuesday. He completed the remaining $\frac {1}{4}$ of the magazine on Wednesday. How many pages are there in the magazine? Continue reading A student read 30 pages of a magazine …→
The first law of thermodynamics is a fundamental principle in thermodynamics that states that energy cannot be created or destroyed, but it can be transformed from one form to another. This law is also known as the law of conservation of energy. Continue reading 1st Law of Thermodynamics→
