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A small charge q = 6.0 C is found in a uniform electric field E = 2.6 N/C. Determine the force on the charge
What is the resistance R of a 51.7 m long aluminum wire that has a diameter of 8.93mm? The resistivity of aluminum is 2.83 x 10-8
- A coil has inductance of 0.318H and aresistance of 200V .a capacitor of value 3.18Micro farads is connected in parallel with a coil of a sinusoidal supply of variable frequency.calculate the frequency at which the supply of current and voltage are in phase.
When Asinusoidal current of maximum value of 20mA flows through aresistor ,the p.d across its ends is 400V maximum .find the energy dissipated by resistor in a time of 5minutes
Find the pull on the plunger of an electromagnet when the total flux uniformly distributed is 0.8 mWb. The diameter of the plunger is 5 cm.
A power transformer has a core material with hysteresis coefficient of 120 J/m3. Its volume is 8000 cm3 and the maximum flux density is 1.1 T. Find the hysteresis loss if the frequency of the supply is 50 Hz.
A magnetomotive force is supplied by a current of 1 A through 100 turns. The magnetic circuit consists of a steel core of 1000 permeability, 10 cm long and 4 cm2 area and an air gap 1 cm long. Find the field intensity at the air gap in Oersted
A solenoid has a magnetic reluctance of 0.0022. It has 300 turns. If the current flowing is 0.5 A, find the total flux in max wells.
A car initially traveling at a speed of 16 meters per second accelerates uniformly to a speed of
20 meters per second over a distance of 36 meters. What is the magnitude of the car’s acceleration?
An electric iron is rated 500W, 200V calculate the :
(a) the current required to operate the iron
(b) the heat generated in 30minutes.
