Understanding RC Circuit Charging

In an RC circuit, what happens to the voltage across the capacitor as it charges over time?

• It decreases exponentially.

• It remains constant.

• It increases linearly.

• It increases exponentially.

What is the initial current through the resistor when a capacitor in an RC circuit starts charging?

• Zero

• Maximum

• Half of the maximum

• It depends on the capacitance

• It is halved.

• It remains the same.

• It is doubled.

• It is quadrupled.

• Ohms

• Farads

• Seconds

• Amperes

• 0% of the supply voltage

• 37% of the supply voltage

• 63% of the supply voltage

• 100% of the supply voltage

What happens to the charging time of a capacitor if the capacitance is increased while keeping the resistance constant?

• The charging time decreases.

• The charging time remains the same.

• The charging time increases.

• The charging time becomes zero.

In an RC circuit, what is the final voltage across the capacitor after a long time?

• Zero

• Half of the supply voltage

• Equal to the supply voltage

• Twice the supply voltage

What is the effect of increasing the resistance in an RC circuit on the initial charging current?

• The initial charging current increases.

• The initial charging current decreases.

• The initial charging current remains the same.

• The initial charging current becomes zero.