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Phys 304 (physics 2)

Phys 304 (physics 2)

Posted by Mr. Abdullah Mohamed
Categories Uncategorized
Date January 17, 2025
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Current of 0.75 A, when a battery of 1.5 V is connected to the wire of 5 m having cross sectional area 2.5 × 10-7m², will have resistivity?

The resistance of a 2 km length of cable of cross-sectional area 2 mm2and resistivity of 2 × 10−8Ω m is?

A piece of graphite has a cross-sectional area of 10 mm2. If its resistance is 0.1 Ω and its resistivity 10 × 10−8Ω m, its length is?

Aresistorhas resistance1 kΩ, and electric power 1 Watt can safely pass an electric current of?

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An electric dipole consists of two charges of equal magnitude and opposite sign separated by a distance 2a, The dipole is along the x axis and is centered at the origin.(A) Calculate the electric potential at point P.(B) Calculate V and at a point far from the dipole.

What is the electric potential at the center of the square of charged particles shown in the figure? The charges are:q1= 1×10^-8 C, q2=- 2 x10^-8 C, q3=3 x10^-8 C, q4= 2 x10^-8C, and the distance from each charge to P is 0.71m, d=1m.Calculate the magnitude of the amount of work required to bring a fifth charge having a charge of +1μC from very far away to the center of the square.

What must the magnitude of an isolated positive point charge be for the electric potential at 10 cm from the charge be +100 V?

The force act on q1

The force act on q2

The force act on q3

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Lec 3

Mr. Abdullah Mohamed

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