The lower end of the lightning conductor is connected to a metal plate, which is buried deep inside the Earth with the help of a conducting wire.

The lower end of the lightning conductor is connected to a metal plate and ………….

A lightning conductor is a long, pointed metal rod fixed on ....................(top of a tall building/buried deep inside the earth).

Which wire in a power circuit is connected to the metallic body of the appliance ?

which of the following wires does connect the metal case of the device to the earth?

Four identical conducting plates are placed parallel to each other at equal separations as shown below: Plates A and D are fixed while B and C are connected with the help of a conducting spring of spring constant k. Initially, the spring is in relaxed position and B and C are at rest, now the spring is compressed slightly by displacing B and C and then plates B and C are released to perform SHM. Now the capacitance of the system across PQ [ Mass of each plate is m]

A ring A which can slide on a smooth wire is connected to one end of a string as shown in fig. Other end of the string is connected to a hanging mass B. Find the speed of the ring when the string makes an angle theta with the wire and mass B is going down with a velocity v.

The earth wire is normally connected to the metal casings present in the appliances

A solid metallic sphere of radius a is surrounded by a conducting spherical shell of radius b(bgt a ). The solid sphere is given a charge Q. A student measures the potential at the surface of the solid sphere as V and the potential at the surface of spherical shell as V_b . After taking these readings, he decides . to put charge of -4Q on the shell. He then noted the readings of the potential of solid sphere and the shell and found that the potential difference is /_\V . He then connected the outer spherical shell to the earth by a conducting wire and found that the charge on the outer surface of the shell as He then decides to remove the earthing connection from the shell and earthed the inner solid sphere. Connecting the inner sphere with the earth he observes the charge on the solid sphere as q_2 . He then wanted to check what happens if the two are connected by the conducting wire. So he removed the earthing connection and connected a conducting wire between the solid sphere and the spherical shelll. After the connections were made he found the charge on the outer shell as q_3 . Potential difference (/_\CV) measured by the student between the inner solid shere and outer shell after putting a charge -4Q is

Four identical metallic plates (1,2,3, and 4) are arranged in air at same distance d from each other with their outer plates being connected together and earthed. If the plates 2 and 3 are connected with a cell of constant emf E, then ratio of electric fields between the plate is

A solid metallic sphere of radius a is surrounded by a conducting spherical shell of radius b(bgt a) . The solid sphere is given a charge Q. A student measures the potential at the surface of the solid sphere as V and the potential at the surface of spherical shell as V_b . After taking these readings, he decides . to put charge of -4Q on the shell. He then noted the readings of the potential of solid sphere and the shell and found that the potential difference is /_\V . He then connected the outer spherical shell to the earth by a conducting wire and found that the charge on the outer surface of the shell as He then decides to remove the earthing connection from the shell and earthed the inner solid sphere. Connecting the inner sphere with the earth he observes the charge on the solid sphere as q_2 . He then wanted to check what happens if the two are connected by the conducting wire. So he removed the earthing connection and connected a conducting wire between the solid sphere and the spherical shelll. After the connections were made he found the charge on the outer shell as q_3 . q_2 is