Acircuit has a current of 1.2 a. if the voltage decreases to one-third of its original amount while the resistance remains constant, what will be the resulting current?
a. 0.3 a
b. 0.4 a
c. 1.2 a
d. 3.6 a

(B). The resulting current will be 0.4 A.

Explanation:

Given that,

Current = 1.2 A

Voltage = V

Using Ohm's law

The voltage of the circuit is equal to the product of the current and resistance.

....(I)

If the voltage decreases to one-third of its original amount while the resistance remains constant,

Voltage

.....(II)

The ratio of the equation (I) and (II)

Hence, The resulting current will be 0.4 A.

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