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To find the current in the conductor, we need to understand the relationship between the given quantities. The electric field (E) in a conductor where an electric potential (V) is applied across a distance (d) can be expressed as (E = V / d). However, the electric field is given as 2 units (assuming SI units, this would be volts per meter), and the distance is 100 cm (which is 1 meter). From this, we can directly find the potential difference (V) across the conductor since (V = E times d).
Given:
– Electric field (E) = 2 V/m
– Distance (d) = 100 cm = 1 m
First, let’s find the potential difference (V):
[ V = E times d = 2 , text{V/m} times 1 , text{m} = 2 , text{V} ]
Now, Ohm’s law states that (V = IR), where (V) is the voltage across the conductor, (I) is the current through the conductor, and (R) is the resistance of the conductor. Given the resistance (R) is 2 ohms, we rearrange Ohm’s law to solve for the current (I):
[ I = frac{V}{R} ]
Substituting the given values:
[ I = frac{2 ,
a
Explanation: We know that E = V/d. To get potential, V = E X d = 2 X 1 = 2 volts. From
Ohm’s law, V = IR and current I = V/R = 2/2 = 1A.