Electricity and Magnetism Answers

a 2.0H solenoid is connected in serries with a resistor of total reisitance 5.0 ohms to 2.0V dc supply calculate 1. the final current 2.the initial rate of change of current with time 3. the rate of change of current with time when current is 2A

Can a charged particle q move through a uniform magnetic field B without experiencing any force F ? Explain.

a solenoid having an air core and 10 cm long has 100 turns and its area of cross-section is 5 cm² . find co-efficient of self-inductance of the solenoid?
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a spherical shell of charge of uniform density . Plot E for distance r from the center of the shell ranging from zero to 30 cm. Assume that  = 1.010-6 C/m3, a = 10 cm and b = 20 cm.

3-11. At some instant the velocity components of an electron moving between two charged parallel
plates are vx = 1.5105 m/s and vy = 0.30104 m/s. If the electric field between the plates is given by
E = j1.2104 N/C, (a) what is the acceleration of the electron? (b) When the x-coordinate of the
electron has changed by 2.0 cm what will be the velocity of the electron?

Warner likes waffles for breakfast. How much energy is used by a waffle maker that has a power rating of .7501 kW and is operated for 3.6h ?

A plane has an air speed of 240km/h.what should be the planes heading if it is to travel due north,relative to the earth in a wind blowing with a velocity of 100km/h in an easterly direction?

A sphere of homogenous linear dielectric material is placed in an otherwise uniform elctric fild E not . find the elctric field inside the sphere?

You go to the power station. You need from the power station to your house. The station has primary windings of 10 and secondary windings of 10,000. If your house has primary winding of 10,000 and the total voltage needed is 240 V, how much would you need from your house?

When a glass rod is rubbed with silk, the rod becomes positively charged, but when a rubber rod is rubbed with fur, the rubber becomes negatively charged. Suppose you have a charged object but don’t know whether its charge is positive or negative. Explain how you could use a glass rod and piece of silk to determine the sign of the unknown charge on the object.