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Electric Circuits
An unloaded zener regulator has a
source voltage of 24 V, a series resistance of
470 V, and a zener voltage of 15 V. What is the
zener current?
source voltage of 24 V, a series resistance of
470 V, and a zener voltage of 15 V. What is the
zener current?
Electric Circuits
Draw a pattern if electric field around two equal opposite charges
Electric Circuits
What is the power rating of a heater that uses 1.2KWh of energy in 45minutes?
Electric Circuits
Two charges, +6.00 μC (left) and -2.50 μC (right) are fixed in place and separated by 1.00 m. Where (in m) along the line joining and going through the two charges will the net electric field be zero? Locate this point relative to the positive charge.
Electric Circuits
A potential difference of 24 v is applied across a resistor to drive a certain charge through it. The work done in driving this charge through the resistor is 3 J. Calculate the charge.
Electric Circuits
An electron is to be accelerated from 2.0 x 106m/s to 7.5 x 106m/s. Through what potential difference must the electron pass to accomplish this?
Electric Circuits
A solenoid of length 2.2 m has a diameter of
0.9 m. The magnetic field at its centre is
0.4 tesla. Estimate the energy stored in the
field of this coil
0.9 m. The magnetic field at its centre is
0.4 tesla. Estimate the energy stored in the
field of this coil
Electric Circuits
When electric power is to be transmitted over long distances, is it economical to use high
voltage and low current or low voltage and high current? Briefly explain your choice.
voltage and low current or low voltage and high current? Briefly explain your choice.
Electric Circuits
A metal crossbar of mass m slides without friction on two parallel conducting rails a distance b apart. A a resistor R is conducted across the rails at one end. Compared with R the resistance of the bar is negligible. There is a uniform field perpendicular to the plane of the figure. Does the rod ever stop moving ? And if so when?
Electric Circuits
The contents of a four-bit register are initially 1001. The register is shifted ten times to the right withserial input being 110100101101 and then eight time left. What are the contents of the register at last shift?
