Ohm's law
Ohm’s law is a prominent concept in physics and electronics. It gives the relation between the current and the voltage. It is used to analyze and construct electrical circuits. Ohm's law states that the voltage across a conductor is directly proportional to the current flowing through it.
Path of Least Resistance
In a series of alternate pathways, the direction of least resistance is the actual or metaphorical route that offers the least resistance to forwarding motion by a given individual or body.
What is the time constant of this circuit? a)10 microseconds, b) 1 microsecond, c) 1 millisecond or d) 100 microseconds?
We first calculate the equivalent capacitance and equivalent resistance of the Circuit,
The equivalent capacitance will be
The two parallel capacitors of 10 pico Farad will join to give 20 pico Farad capacitance and this 20 pico Farad
capacitance is connected in series with another 20 pico Farad capacitor and the resultant capacitance will be
1/CEq = 1/20 + 1/20 = 2/20 = 1/10
Therefore CEq = 10 pico Farad
The Equivalent Resistance of the circuit is the series combination of 40 K Ohm and 60 K Ohm Resitors.
REq = 40 +60 = 100 K Omh.
Thus the Equivalent Resistance, REq = 100 K Ohm.
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