Why Does Voltage Drop Across a Resistor?

Why Does Voltage Drop Across a Resistor?

Foundational Physics Short Answer: Voltage drops across a resistor because moving charge transfers electrical energy to the resistor and its surroundings. The charges keep flowing, but each coulomb has less electric potential energy after moving through the resistor...
Why Does Current Split at a Junction?

Why Does Current Split at a Junction?

Foundational Physics Short Answer: Electric current splits at a junction because charge has more than one path to follow. In a steady circuit, the total current entering the junction equals the total current leaving it. How much goes into each branch depends on the...
Why Is Voltage the Same Across Parallel Branches?

Why Is Voltage the Same Across Parallel Branches?

Foundational Physics Short Answer: Every parallel branch has the same voltage across it because every branch starts and ends at the same two connection points. Voltage measures the electric potential difference between two points. Different branches can have different...