Subject Volts Amps
Origin of word Volts – Unit of voltage Amps – Unit of current
Definition Electricity circulation pressure or force Amount of electricity circulation in circuit or electrical system
Instrument Voltmeter Ammeter
Common Expression Voltage, V= dW/dq . So, 1 V = 1 joule /coulomb Current , I = dq/dt , So, 1 A = 1 coulomb/second
Dependency Voltage or volts is independent of current (amps) Without voltage (volts) current cannot create (circulate)
Harmful to human Voltage does not kill human ** Suitable amount of electricity flows through the body can kills human
Symbol Voltage symbol is “V” and unit express as “V” also Current express as “I” and unit of current express as “A”
Field classification Voltage that create magnetic field Current which create electrostatic field
Series circuit Voltage across each and every load or component will be different depending upon its magnitude Current will be same for all component or load which are connected in series
Parallel circuit Voltage will be same for all parallel connected load Current will be different for parallel load depending upon connected load magnitude
History of origin Alessandro Volta (1745–1827) invented voltaic pile (electrical battery) in 1800. On the base of his name volt is used. Andr?-Marie Amp?re who invented the current in 1820. On the base of his name ampere is used.
** Voltage does not directly kill any person where current does. Actually without the presence of voltage current cannot flow through anything. But main concept is voltage cannot circulate but current that circulation can cause death of human.