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Electric Circuits
Suppose, the two sides of a parallel plate capacitor are connected with a battery of V electromagnetic force. The capacitance is C, plate area is A and the distance between the plates is d.
Then,
(i) How much energy is used by the battery to fully charge the capacitor?
(ii) what is the Energy stored by the capacitor?
(ii) If the battery is removed after the capacitor is charged, and the d(distance between the plates) is doubled, what is the current energy stored in the capacitor?
Electric Circuits
Calculate the resistance of a resistor it the voltage across the resistor is 6 V and the current flowing through the resistor is 0,25 A
Electric Circuits
In a Cartesian plane, 4 charges are placed as follows: a 5C charge is
placed at (0, 3), -4C charge is placed at (5, -2), 1.5C charge is placed at
(0, 0) and a -6C charge is placed at (-4, -4). Determine the force felt by
the charge at the origin due to the presence of the other charges.
placed at (0, 3), -4C charge is placed at (5, -2), 1.5C charge is placed at
(0, 0) and a -6C charge is placed at (-4, -4). Determine the force felt by
the charge at the origin due to the presence of the other charges.
Electric Circuits
A particle has charge of -3nC. Find the magnitude and direction of
the electric field due to this particle at a point 0.250m directly above it.
At what distance from this particle does its electric field have a
magnitude of 12V/m?
the electric field due to this particle at a point 0.250m directly above it.
At what distance from this particle does its electric field have a
magnitude of 12V/m?
Electric Circuits
Two charges of -6.25nC and -12.5nC are placed 25cm in a line.
Determine the electric field at a point 10cm to the left of -6.25nC and
the electric field at a point 10cm to the left of the -12.5nC
Determine the electric field at a point 10cm to the left of -6.25nC and
the electric field at a point 10cm to the left of the -12.5nC
Electric Circuits
A proton is placed in a uniform electric field of 3.75 kN/C. Calculate
the magnitude of the electric force felt by the proton, the proton’s
acceleration and the proton’s speed after 1us in the field assuming
initially, it is at rest.
the magnitude of the electric force felt by the proton, the proton’s
acceleration and the proton’s speed after 1us in the field assuming
initially, it is at rest.
Electric Circuits
Suppose a Taser gun has its prongs have a distance of 9.5mm. Air
breaks down with a field strength of 30kV/cm. If an arc is formed at the
prongs of the Taser, determine the maximum voltage needed to create
this arc.
breaks down with a field strength of 30kV/cm. If an arc is formed at the
prongs of the Taser, determine the maximum voltage needed to create
this arc.
Electric Circuits
Two charges are placed in a line with a distance of 10cm. At the left end
of the line, a 12nC is placed and to the right end of the line, a –12nC is
placed. Determine the potential at the point 4cm to the left of 12nC, at
the point 4cm to the -12nC and a point 13cm from both charges.
of the line, a 12nC is placed and to the right end of the line, a –12nC is
placed. Determine the potential at the point 4cm to the left of 12nC, at
the point 4cm to the -12nC and a point 13cm from both charges.
Electric Circuits
Determine the electric potential at the center of a square if 4C charges
are placed at the vertices of the square of side length 5mm
are placed at the vertices of the square of side length 5mm
Electric Circuits
A current of one ampere is passed through a straight wire of length 2 metre. The magnetic field at a point in air at a distance of 3 m from one end of the wire but lying on the axis of the wire will be
