Consider the circuit shown in the figure below

Consider the circuit shown in the figure below. Find (a) the potential difference between points a and b and (b) the current in the 20.0-V resistor.

[nguyenuchoang]

thank you so much, you made my day!! God bless you <3

[ashleyurbina]

Thank you so much! Looking forward for your videos

[gurneetsingh]

Can someone explain to me that why sometimes potential across two points has negative sign. In this case, he found Vab which was pos., but what if they asked for Vba would it be right to include negative sign and keep the same magnitude. So, my question is how do I know if you include negative sign or not?

[cassandracurran]

Great video!! Really helped me understand