2. A charge of 2.75 µC is uniformly distributed on a ring of radius 8.5 cm. Find the electric field strength on the axis at distances of (a) [2 cm, (b) 3.6 cm, and (c) 4.0 m from the center of the ring. Ans: (a) 4.7x10³N/C (b) 1.1x10°N/C (c) 1.5x10³N/C
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- (a) What magnitude point charge (in C) creates a 10,000 N/C electric field at a distance of 0.220 m? (b) How large (in N/C) is the field at 10.0 m?Given that q1 = 6.20 nC, q2 = -1.8 nC, a = 9.80 cm and b = 2.00 cm. What is the magntude of the electric field at point p? 3.47×104 N/C 4.09×104 N/C 1.73×104 N/C 4.63×104 N/CA metal sphere of radius 10 cm carries a charge of +2.0 micro C. What is the magnitude of the electric field 5.0 cm from the sphere's surface
- 2 narrow, flat metal plates are positioned vertically, 20.00 cm. The first plate has a positive charge with charge density σ=+630.0 mC/m2 and a second plate has an equal but opposite negative charge with charge density σ=-6300.0 mC/m2 . There are also two narrow, flat metal plates positioned horizontally, 30.00 cm apart, with the top plate given a negative charge, and the bottom plate given an equal but opposite positive charge, such that the electric potential of the bottom plate is 5.00 V higher than the top plate. A small sphere with a mass of m =64.35 g, and a charge of q =22.00 mC is attached to a narrow, stiff, massless, insulating rod with a length of L= 8.00 cm, which is pivoted at point O, which is 2.000 cm from the second plate. The sphere/rod unit is angled at 5 degrees with horizontal and released from rest. Will the sphere/rod ever hit an angle of 0 degrees with the horizontal? If so, how long will it take to reach that point?If the electric field strength in air exceeds 3.0 ✕ 106 N/C, the air becomes a conductor. Using this fact, determine the maximum amount of charge that can be carried by a metal sphere 3.9 m in radius. _________ CTwo circular metal plates of diameter 10cm are seperated by a distance of 1mm. One carries a positive charge and the other and equal negative charge. If the electric field between them is 5x10^5 N/C, find the charge on each plate. Sketch the electric field lines.
- 1. Two thin conducting plates, each 30 cm on a side, are situated parallel to one another and 5 mm apart. If 1.3.10¹2 electrons are moved from one plate to the other, what is the electric field between the plates? (a) In your notebook, draw the two conducting plates and draw the electric field lines between the plates. How is the electric field directed? v (b) Calculate the surface charge density of the plates. C/m 0= (c) What is the electric field between the plates? E= N/C 2A spherical conductor of radius 4.07 mm carries a total charge of 6.23 nC. What is the magnitude of the electric field at a distance of 7.09 mm from the center of the sphere? (k = 1/(4л) = 8.99 × 10⁹ N-m²/C²)The electric field between two parallel square metal plates is 240 N/C. The plates have an area of 0.64m2 on a side and are separated by 0.02m. What is the charge on each plate (assume equal and opposite)? Neglect edge effects. (Hint : The electric field in parallel plates is E 2, where o is the surface charge density ) €0 O 3.75 x 10-8 C O 1.36 x 10-8 C 8.83 x 10-8 C O 1.36 × 10-9 C