Electrostatics Math Electrostatics MC Electric Current & Circuits Magnetism Math Magnetism MC

Question A positive charge of 5.6*10^-6C is acted upon by a force of 50N at a certain distance. What is the electric field at that same distance?

Answer 1 – 10 =(50)/(5.6*10^-6) =8.93*10^6

Question How many electrons must be removed from an electrically neutral gold medal to give it a charge of 3.96*10^-6.

Answer 1 – 20 =(3.96*10^-6)/(1.6*10^-19) =2.475*10^13

Question What is the net force on charge 2 if charge 1 is -2C, charge 2 is 5C and charge 3 is 3C? D= 4m, k=1

Answer 1 – 30

Question Three positive charges of q1=3.5*10^-6, q2=8.0*10^-6 and q3=2.3*10^-6, respectively, are arranged in a triangle, as shown in figure. Find the magnitude of the electric force on the q2 charge.

Answer 1 – 40

Question A charge q1=+10.0uc is at the origin, and a charge q2=-18.0uc is on the x-axis.65m from the origin, Find the electric field strength at Point P, which is on the y-axis.255m from the origin. Angle is 62.

Answer 1 – 50

Question When there is an equal amount of positive and negative charges on an object, the object is………………..

Answer 2 – 10 Neutral

Question Electric field lines indicate…………… ……..

Answer 2 – 20 Direction and speed

Question The leyden jar shown had negative charge on the inside cup and the outside cup(the one in middle)………….

Answer 2 – 30 Positive

Question When the charge is doubled on one particle, the attractive force between two particles is……

Answer 2 – 40 Doubled

Question A metal can is brought near a negative charged PVC pipe. The can is _____________ to the pipe because the can is ____________

Answer 2 – 50 Attracted and polarized

Question In solid conductors, electric current is the flow of………….

Answer 3 – 10 Electrons

Question The relationship between current and potential in Ohm’s Law is…………

Answer 3 – 20 Directly proportional

Question How much current will flow through.1 Ohm resistor?

Answer 3 – 30 VOLTAGECURRENTRESISTANCE /90

Question A circuit has only one resistor, a 50 ohm one. If a second 50 ohm resistor is added in parallel, the overall resistance will be…

Answer 3 – ohms

Question What is the current for resistor 2?(2 decimals) R1=13 R2=24 R3=20 R4=6

Answer 3 – 50 VOLTAGECURRENTRESISTANCE / /523523/31

Question A wire carries a current of 20amps at an angle of 90 degrees to a magnetic field “B”. If the wire is 10m long and the magnetic force is 50N, what is the strength of the magnetic field?

Answer 4 – 10

Question A wire has a magnetic field of strength of 50T. If the wire is 16.5 meters long and the magnetic for is 100N. What is the current?

Answer 4 – 20

Question Dr.V is on his Jetpack and is flying due east at 120m/s passing over Atlanta where the magnetic field of the earth is 3.3*10^-5 Tesla. Dr.V has a positive charge of 16*10^8C. What is the magnitude of magnetic force in Newton's on Dr.V?

Answer 4 – 30

Question Dr.V found an unknown compound which has a force of 5*10^-9N and a charge of 2nC and a has horizontal velocity of 5000m/s. He needs your help to help find him the magnetic field force of the unknown compound.

Answer 4 – 40

Question A square coil of wire in a motor coil containing a single turn is placed in a uniform 10.8T magnetic field. Each side has a length of 10m and the current of the coil is 15amps. Determine the magnitude of the magnetic force on the top side of the wire.

Answer 4 – 50

Question Is this a positive or a negative current?

Answer 5 – 10 Positive

Question Where is the magnetic field strength the closet?

Answer 5 – 20 Close to a magnet pole

Question What is the name of the device that converts electric energy into mechanical energy?

Answer 5 – 30 Electric motor

Question What direction is the force using FBI

Answer 5 – 40 Up

Question What direction is the force using FBI

Answer 5 – 50 In page and diagonal