physics Flashcards
In current electricity, a positive charge
refers to,
prescence of proton
Rubbing of comb with hair
transfers electric charge
Heating effect of current is called,
Joule heating
Potential near a charge is the measure of
its——-to bring a positive charge at
that point.
work
In an electrolyte the current is due to the
flow of
electrons
Electroplating is an example for
chemical effect
The direction opposite to the movement
of electron is called_______current.
conventional
Resistance of a wire depends on,
nature of material
Electrons move from________potential to_____potential.
negative, positive
The e.m.f of a cell is analogues to——-
of a pipe line.
pumping
The domestic electricity in India is an ac
with a frequency of ——-Hz.
50
Ammeter is connected in ______(series/parallel) in any electric circuit
series
Annode is positive or negative?
Positive
define electric current
movement of electrons
electric current unit
ampere
electric charge unit
columb
safety features while handling with electricity
ground connection, trip switch, fuse
no. of electrons in 1 coulomb
6.25x10^18
Electric charge is ________ in nature
Additive
Total electric charge of a system
Algebraic sum of all the charges located in the system
Electrostatic force between two point charges obey
Newton’s third law
What is electric force
The force existing between charges
Ammeter define
To measure the strength of electric current
Si unit of emf
Joule per coulomb (JC^-1)
Or
Volt
Si unit of potential diff
Volt
What is rectifier
The device used to convert ac to dc
Types of current
Direct current and alternating current
Use of battery
To maintain potential difference btvn 2 ends of a wire
