Let the resistance of an electrical component remain constant while the potential difference across the two ends of the component decreases to half of its former value. The current through the component will

A
Remain same
B
Become half
C
Become twice
D
Become four times

Solution:

Let the resistance of an electrical component remain constant while the potential difference across the two ends of the component decreases to half of its former value. The current through the component will become half.
According to Ohm’s law, “The current flowing through a component is directly proportional to the potential difference between its terminals, i.e.,

V \propto I

.” If the potential difference increases, the current will increase and vice-versa. Here, the potential difference across the two ends of the component decreases to half. Hence, the current will also decrease to half of its former value.