Question

State Ohm's Law. Calculate the resistance of a conductor if the current flowing through it is 0.2A and the applied potential difference is 0.8V .

Answer 1

Answer:

ohm's law states that the potential difference across the ends of a conductor is directly proportional to the current flowing through it , temperature and physical properties remaining constant.

v= 0.8

I=0.2

v=IR

R=4 ohm

Answer 2

Answer:

Ohm's Law:

Acc to ohm's law the current following through a conductor is directly proportional to the potential across it.

i.e. I (directly proportional) to V

we can write it as

V (directly proportional) to I

V=RI

where R is proportionality constant. called Resistance. And its unit is ohm.

When current (I)=0.2A

Potential (V)=0.8V

Resistance (R)=?

as V=IR

or R = V/I

= 0.8/0.2

R =4 ohm.