Question 3:
Let the resistance of an electrical component remains constant while the potential
difference across the two ends of the component decreases to half of its former
value.What change will occur in the current through it?
Answer:
The change in the current flowing through the component is given by Ohm’s law as,
V = IR
I = V/R
Where,
Resistance of the electrical component = R
Potential difference = V
Current = I
The potential difference is reduced to half, keeping resistance constant.
Let the new resistance be R’ and the new amount of current be I ‘.
Therefore, from Ohm’s law, we obtain the amount of new current.
Therefore, the amount of current flowing through the electrical component is
reduced by half.
Latest Govt Job & Exam Updates: