Electricity and Magnetism Answers

Object A and Object B are charged with +37.2 u coulombs and -68.1 μ coulombs, respectively Given Chat the wo objects are separated by 0.37 m. Which of the following statements is/are valid?

a. Object A attracts object B with a force of 20.5 N

b. Object 8 repels object A with a force of 166.4 N

c. Object A repels object B with a force of 166.4 N d. Object B attracts object A with a force of 166.4 N

e. Object B attracts object A with a force of 2015 N

f. Object A repels object 8 with a force of 20.5 N

g. Object B repels object A with a force of 20.5 N

HObject A attracts object 8 with a force of 166.4 N

Which of the following activities would lead to the creation of magnetic fields?

a. Placing a positive ion in an environment where it has zero acceleration and a zero velocity

b. Placing a proton in an environment where it is moving at 2 m/s in a straight line

c. Placing a positive ion in an environment where it is completely at rest d. Placing the nucleus of an atom in an environment where it has zero acceleration and a nonzero velocity

e. Placing an electron in an environment where it has a nonzero acceleration that is constantly changing

Which of the following activities would lead to the creation of independent magnetic fields (ie. One that does not depend on any electric field in its proximity) ?

a. Placing a proton in an environment where its velocity constantly changing

b. Placing a positive ion in an environment where it is moving at 8

m/s around a circular path

c. Placing a negative ion in an environment where it is moving at

constant velocity d. Placing an electron in an environment where it has zero

acceleration and a zero velocity

e. Placing an electron in an environment where it is completely at

rest

Object A and Object B are charged with +47.4 μ coulombs and +16.3 μ coulombs, respectively. Given that the two objects are separated by 0.64 m, Which of the following statements is/are valid?

a. Object A attracts object B with a force of 27.1 N

b. Object A repels object B with a force of 17:0N

c. Object B attracts object A with a force of 27.1N

d. Object A attracts object B with a force of 118.7 N

e. Object 8 repeli object A with a force of 120 N

1. Object Battracts object A with a force of 118.7 N

Object 8 repels object A with a force of 433 N

n Object A repels object 8 with a force of 43. N

Two neutral objects are rubbed against each other with the aim of facilitating charging by friction Which of the

following are valid possibilities?

a. One object lost 58 electrons and the other last 58 protons

b. Both objects lost 58 electrons

c. One object gained 58 electrons and the other gained 58 protons

d. One object gained 58 electrons and the other lost 58 electrons

e. Both objects gained 58 protons

f. Both objects lost 58 protons

g. One object gained 58 protons and the other lost 58 protons

h. Both objects gained 58 electrons

A circular iron ring of mean diameter 25 cm and cross-sectional area 9 𝑐𝑚2 is wound with a coil of 100 turns and carries a current of 1.5 A. The relative permeability of iron is 2000. Calculate the amount of flux produced in the ring

The magnetic flux density between the poles of a powerful electromagnetic force is 2.0 Tesla. A wire of length 2.0x10-²m. carrying a current of 4 ampere is placed in the given field. Calculate -

I. The maximum force on the wire.

II. Force when the wire meet at an angle of 45°

III. Force when the wire is parallel to the field.

the force on a charge moving with velocity (v) in a magnetic field (B) half of a maximum force.

Calculate the angle between V and B. F=qvB

(1) A student claims that capacitors in parallel combinations have greater

equivalent capacitance compared to the magnitude of either the capacitor and

less than either the capacitors when connected in series combination. How will

you agree or disagree with the claim?

two charged particle q1=10uC and q2=20uC are separated by distance r=15cm.what is the magnitude of the electrostatic force with solution.