Question

Difference between voltage drop and potential difference

Answer 1

Voltage is the potential difference between the source & any point in the circuit.

 

Voltage drop means, amount of voltage by which voltage across load resistor is less then the source voltage.

Rl - Resistence of wire need to connect to resistor  

RL - Load Resistence

i - Current in the cicuit

Vin - Voltage of source

Vin = V(wire)+V(load)

V(wire)  = I*Rl               -voltage drop  

V(Load) = I*RL             -voltage across load

there is voltage drop in wire connected to the positive terminal of the source to load resistor.

Voltage across the resistor = Potential difference between the two terminal of the resistor, which here is V(load).

For AC circuit ,

V(wire)= I*Z

Z - Electrical Inpedence  

Z is the combination of resistence ,inductance,capacitance

Voltage drop is more AC as compare to DC

Answer 2

Answer:The Biot-Savart Law is an equation that describes the magnetic field created by a current-carrying wire, and allows you to calculate its strength at various points. ... If you point your thumb in the direction of the current in a wire, your fingers will curl around that wire in the direction of the magnetic field

Explanation: