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what the main defination of current? Electrical current is a measure of the amount of electrical charge transferred per unit time. It represents the flow of electrons through a
State the law of radioactive decay. Show that radioactive decay is exponential in nature. Does the activity of a radioactive element depend on external physical conditions? La
When a semiconductor is doped with a P-type impurity, each impurity atom will (A) Acquire negative charge. (B) Acquire positive charge. (C) Remain
When a system returns back to its initial state after passing by dissimilar phase, the phenomena is said to be a cyclic process. In this process as ΔU = 0. From first law of the
What is a good physics project?
P-N junction is (A) A rectifier. (B) An amplifier. (C) An Oscillator. (D) A Coupler. Ans: P-N junction is a rectifier.
In an electric field a charge (Q) experiences a force F = QE. If charge is positive then force is directed in the direction of field whereas if charge is negative force acts on i
Q. Show Constant Moment Arm? The simplest case is that of a point mass, and the moment of inertia can be immediately written as I = mR 2 ,
When the two simple harmonic motions have the same periodic time but different amplitude and a phase dissimilarity = ∏/2: The resultant curve may be attained graphically as abov
Radiation Hazards: 1. They can injure our body cells. 2. Excessive radiation might be cause cancer. 3. Energetic radiation penetrates inside the body and can cause other
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