Current of Electricity

Question 1

definition of electric current

Answer 1

rate of flow of charged particles (direction of current is same as net charge flow, opp to -ve charge)

ampere

Question 2

eqn for electric current

Answer 2

I = Q/t

i am a qt

Question 3

def of electric charge

Answer 3

the charge which flows past a point in time t is the product of current and time, if current is steady

coulomb

Question 4

def of electric potential difference

Answer 4

the pd across a device is the electrical energy converted to other forms of energy per unit charge passing through the device

volt

Question 5

eqn for pd

Answer 5

v = w/Q

where w is amt of energy converted from electric TO other forms (J)

Question 6

def of electromotive force

Answer 6

the em force of a source is the electrical energy converted FROM source in driving unit charge around a complete circuit

Question 7

eqn for em force

Answer 7

E = w/Q

where w is amt of energy from electric to other forms (J)

Question 8

def for electric power

Answer 8

power is the rate at which work is done

watt

Question 9

eqn for electric power

Answer 9

P = W/t = IV = IE

Question 10

def of resistance

Answer 10

the ratio of the potential difference across the conductor to the current flowing through it

Question 11

ohms law

Answer 11

the current through a metallic conductor is prop to the PD across its ends under constant physical conditions