Question

Need help with all of these please

1. What is Coulomb's Law? Write the value of Coulomb's constant (ke)? Describe vector nature of electric force (F) with diagram? Problem-1: Find the electric force between two charges of +5 C, and-5 C separated by a distance of 0.001 m? 2. Define electric field (E)? Write S.I. unit? Explain with necessary diagram the directions of electric fields due to a positive and negative charges separately? Problem-2: What is the electric field (E) to be measured by a point charge (+ 2 C) at a distance of 0.02 m? 3. Describe Millikan's Oil drop experiment with figure? What do you mean by charge quantization, Q= ne? Problem-3: What is the charge equivalent Q, when n-10? Describe electric potential energy? Explain the relation between work and potential Energy 4. Define electric potential (V) of a point charge? Problem-4: What is the value of 100 electron volt (eV)? Explain parallel plate capacitor? Draw both parallel and series capacitor connections and fin 5. equivalent capacitance in each case? Problem-5: How much energy stored in a capacitor (10 F) with 200 C of charge?

Answer 1

The electric force of attraction or repulsion between two charges is directly proportional to product of two charges and inversely proportional to square of distance between them F = Q_1 Q_2/4 pi epsilon_0 d^2 = K_e Q_1 Q_2/d^2 Where K_e = 9 times 10^9 N - m^2/C^2 F = Q_1 Q_2/4 pi epsilon_0 d^2 = (5) (-5) times 9 times 10^9/(0.001)^2 = -225 times 10^5 N Magnitude F = 225 times 10^15 N Force is attractive