emperature and Current  A tungsten wire with resistance R_0, at T_0 = 20◦C, and temperature coefficient  α = 4.5×10^−3 (◦C)^−1 is connected to a source, ε of negligible internal resistance.   How much does the initial current, I_0, change when the temperature of the wire is raised by 60%? How about the change in the power dissipated by the tungsten wire

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Q: ptical power of glasses

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Q: Three point charges are placed on the x - axis as shown in the figure below. Find the net electric…

A: q1=3μC=3×10-6 Cq2=-5μC=-5×10-6 Cq3=8μC=8×10-6 Cdistance of q1 from q2, r21=20 cm=20×10-2 mdistance…

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.