What is Kirchoff's first law?

The sum of multiple currents going into a junction equals the sum of the currents leaving it. I1 + I2 = I3

LW

Related Physics A Level answers

All answers ▸

A car of mass 800 kg is accelerated horizontally by constant net force of 1920 N for 9 s. It then breaks for 2 s, but drives off a 5 m high cliff. If μ = 0.85, what is the total horizontal distance travelled by car and its velocity? Ignore air resistance.


How do you use a Variable Resistor to determine values to show the relationship between I and V?


I have trouble visualizing simple harmonic motion, and remembering all the related equations. How should I think about it?


Explain why a jet fighter pilot experiences "weightlessness" when at the top of a loop-the-loop manoeuvre.