# When the resistance in a circuit remains constant, how are the voltage and current related?

When the resistance in a circuit stays fixed, how are the voltage and present associated? the present doubles when the voltage doubles as a result of they’re instantly proportional. the present doubles when the voltage doubles as a result of they’re inversely proportional.

The proper reply is the present doubles when the voltage doubles as a result of they’re instantly proportional. Clarification- From ohm’s legislation we all know that at fixed temperature and stress, the present flowing via a wire is instantly proportional to the potential distinction throughout the 2 ends of a conductor. Mathematically V ∝ I                        ⇒ V = IR Right here, R known as because the resistance of the conductor, V is the voltage, and I is the present. As per the query, the resistance is stored fixed. Therefore, if present is doubled within the circuit, then voltage can be doubled as present and voltage are instantly proportional to one another.

The present doubles when the voltage doubles as a result of they’re instantly proportional.

The reply is possibility a.

1. The present will drop to half of its authentic worth. Clarification: The issue will be solved by utilizing Ohm’s legislation: the place V is the voltage throughout the circuit R is the resistance of the circuit I is the present We will rewrite it as On this downside, now we have: – the resistance of the circuit stays the identical: R’ = R – the voltage is decreased to half of its authentic worth: So, the brand new present will likely be so, the present will drop to half of its authentic worth.

In spite of everything that effort, you by no means informed us what sort of circuit “… this type of circuit …” is referring to. After scanning the checklist of decisions, my hunch is that you just’re referring to a parallel circuit, and that the proper alternative is ( A ) .   I may very well be mistaken.

C Clarification: adjustments repeatedly

C Clarification: resistance=slope Resistance=(2-0)/(0.6-0) Resistance=2/0.6 Resistance=3.333