Which is the correct formula for Ohm\'s Law (V= voltage, I = current, B = magnet

Question

Which is the correct formula for Ohm's Law (V= voltage, I = current, B = magnetic field. L=length) V=ILBsin(theta) V=I/R V=IR B=V/R A 20 ohm resistor has a voltage drop of 5 volts. What is the current through the resistor? Kirchoff's Junction Rule says that: The voltage going into a junction must equal the sum of the voltages going out of the junction. The current going into a junction must equal the sum of the currents going out of the junction. The voltage drop across a junction is 0 volts. All of the above Kirchoff's Loop Rule Says that: The sum of the voltage drops around a closed loop is 0. The sum of the currents around a closed loop is 0. The sum of the currents and the voltages around a closed loop are 0.

Explanation / Answer

1) as ohm's law

V = I * R

hence ,

the correct option is c) V = I * R

2)

current through the resistance = V/R

current through the resistance = 5/20 A

current through the resistance = 0.25 A

3)

for the Kirchoff's juction rule

the algebric sum of all the currents in a loop is zero.

hence , the correct option is b)

4)

sum of voltage drop across a loop is zero

the correct option is a) the sum of voltage drop around a closed loop is zero.

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