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Two 15 nC charges are at (0, -10 cm) and (0, 10 cm) on the y-axis as shown. What is the strength of the electric field at a point 50 cm away on the x-axis?
A thin spherical shell of metal has a radius of 0.25m and carries charge of 0.2 microcoloumb . calculate the electric intensity just outside the shell.
Can a gaussian surface pass through both conducting or non conducting medium material?
The relative dielectric constant ε of water is 80 . This does not justify its refractive
index n = 1.33 violating the expression n^2 = ε. This is because?
The cube is immersed in one liquid by 15 cm and in the other by 40 cm. To what depth will it sink into a liquid whose density is the arithmetic mean of the densities of the first two liquids?
Explain why the pressure in the ocean increases with depth. What is the approximate
internal pressure in animals that live at a depth of 1000 m below sea level ?
A current 5A passes through a straight wire in a uniform magnitude field of a flux density 2.0 T. Calculate the force per unit length exerted on the wire when it is inclined at 30° to the field.
A long straight wire carries a current of 1.5 A. an electron travels with a speed of 5 x 106 cm/s parallel to the wire 10 cm from it and in the same direction as the current. What force does the magnetic field of the current exert on the moving electron.
A charged oil drop is prevented from falling under gravity by a vertical electric field
between two horizontal metal plates charged to a potential difference 6920 V, the
distance between the plates being 1.3 cm. When the field is cut off the drop falls in air
with a uniform velocity of 1.9 × 10−4
Two long parallel wires are 10 cm apart and carry currents of 6 A and 4 A. what is the field B at 4 A carrying wire due to 6 A wire.
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