The voltmeter is connected across the two ends of a conductor to measure the potential difference across the two terminals of the conductor. The voltmeter is connected across the two poles of a battery...
The transistor is a crystal of n-type confined between two crystals of p-type or a crystal of p-type confined between two crystals of n-type, There are two types of connection for a transistor in...
X-rays are invisible electromagnetic waves of high energy and short wavelengths lie between the wavelengths of gamma rays and the ultraviolet rays, Rontgen discovered invisible electromagnetic waves of short wavelength ranges from 10−13 m...
Any metal contains positive ions & free electrons which can move around inside the metal but can not leave it due to the attractive forces of the surface which may be represented by a...
