The figure shows a simple RC circuit consisting of a 10.0-µF capacitor in series with a resistor.Initially,the switch is open as suggested in the figure.The capacitor has been charged so that the potential difference between its plates is 100.0 V.At t = 0 s,the switch is closed.The capacitor discharges exponentially so that 2.0 s after the switch is closed,the potential difference between the capacitor plates is 37 V.In other words,in 2.0 s the potential difference between the capacitor plates is reduced to 37 % of its original value.

-Determine the potential drop across the resistor R at t = 2.0 s (i.e. ,two seconds after the switch is closed).
A)zero volts
B)37 V
C)63 V
D)87 V
E)100 V

Question

The figure shows a simple RC circuit consisting of a 10.0-µF capacitor in series with a resistor.Initially,the switch is open as suggested in the figure.The capacitor has been charged so that the potential difference between its plates is 100.0 V.At t = 0 s,the switch is closed.The capacitor discharges exponentially so that 2.0 s after the switch is closed,the potential difference between the capacitor plates is 37 V.In other words,in 2.0 s the potential difference between the capacitor plates is reduced to 37 % of its original value.
 
-Determine the potential drop across the resistor R at t = 2.0 s (i.e. ,two seconds after the switch is closed).
A)zero volts 
B)37 V 
C)63 V 
D)87 V 
E)100 V

Quizplus · Accepted Answer

The potential drop across a resistor in a circuit when a switch is closed can be determined using Ohm's Law (V = IR) or other relevant equations depending on the circuit configuration. Without specific details about the circuit (e.g., values of resistance, voltage source, or if the circuit is RC, RL, etc.), it's impossible to calculate or accurately determine the potential drop at a specific time. However, since this is a question that requires a specific answer without providing detailed information, it's likely that the question is hypothetical or based on assumed knowledge not provided in the query. Therefore, the correct choice is selected based on the assumption that there is a specific scenario or formula that leads to the answer.

The Figure Shows a Simple RC Circuit Consisting of a 10.0-µF