- #1
CosmicC
A 50Hz AC source of 20V is connected across R and C. The voltage across R is 12V. The voltage across C is?
I am really sorry for that. Please tell me where do i post if i have a problem and I'm not able to attempt like i don't even know how to begin solving it. Where should those questions go?BvU said:
Yes...I have understood this question. Would love to hear a new explanation if you have one. Thank you :)ehild said:Have you learned about AC circuits?
An RC circuit is a type of electrical circuit that consists of a resistor (R) and a capacitor (C) connected in series. It is commonly used in electronic devices to control the flow of current and store electrical energy.
A 20V AC (alternating current) source will cause the RC circuit to oscillate, or alternate between charging and discharging the capacitor. This is due to the changing polarity of the AC source.
The 12V voltage across R refers to the amount of voltage that is dropped across the resistor in the RC circuit. This voltage is determined by the resistance of the resistor and the amount of current flowing through it.
The capacitor in an RC circuit acts as a storage device for electrical energy. As the capacitor charges, it stores energy and reduces the voltage across it. As it discharges, it releases the stored energy and increases the voltage across it.
The voltage across the capacitor (C) in an RC circuit will vary depending on the charging and discharging of the capacitor. Initially, the voltage across the capacitor will be zero, but as the capacitor charges, the voltage will increase until it reaches the same voltage as the source. As the capacitor discharges, the voltage across it will decrease until it reaches zero again.