Calculate the value of the shunt resistance necessary to increase the measuring range of an ammeter of internal resistance 0.1 ohm from I ampere to 5 ampere.

Calculate the resistivity of a wire having resistance .02 ohm, length = 10 m and area = 1mm^2

A copper wire is stretched so as to increase its length by 0.2% . Calculate the percentage change in the resistance of the wire.

In a Young's double slit experiment, the slits are 0.03 cm apart and the screen is placed 1.5m away from the plane of the sources. The distance between the central bright fringe and the fourth bright fringe is measured to be 1 cm. Determine the wavelength of the light used.

battery gives a current of 0.5A with an external resistor of 12 Omega and.0.25A with resistor of 25 Omega Calculate the internal resistance of the battery.