Question

1. a branch of a parallel circuit that has a shorted component

a allows no current
b measures zero volts across the good component
c allows maximum current
d measures the applied voltage across the shorted component

Explanation:

In a parallel circuit, when a component is shorted, the resistance of that branch becomes very low (ideally zero). According to Ohm's law \(V = IR\), if \(R = 0\), for a non - zero voltage source (applied voltage), the current \(I=\frac{V}{R}\) (tends to infinity, but in practical terms, allows a very large current). Also, in a parallel circuit, the voltage across all branches is the same (equal to the applied voltage). But for a shorted component (which has \(R = 0\)), using \(V = IR\), if we consider a good component in the same branch (which has \(R_{good}>0\)), and the total voltage across the branch \(V_{branch}\). Since the shorted part has \(V_{shorted}=0\) (because \(R = 0\) and \(I\) is finite from the source's perspective in a real - world scenario with source resistance), the voltage across the good component (in series with the shorted part in the branch) is also zero (because \(V_{branch}=V_{shorted}+V_{good}\) and \(V_{branch}\) is determined by the parallel connection to the source. But if one part of the branch is shorted (\(V_{shorted} = 0\)), then \(V_{good}=0\)).

Answer:

B. measures zero volts across the good component