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Consider the following circuit. If the following are the corresponding values of the resistive elements indicated and 15V is applied,
- What is the total equivalent resistance that the voltage source “sees”?
- What is the current, I? Express answer in amperes.
Please see attached image: https://ibb.co/3rSHhm3Five resistors are connected to a 24 V resistor as shown.
(a) What is the total resistance of the circuit?
(b) How much current flows from the battery?
(c) How much power is supplied by the battery?
(d) What is the potential difference across each resistor?
(e) What is the current through each resistor?
(f) What is the power dissipated in each resistor?
Sodium ions (Na+) are flowing through a cylindrical ion channel, which has a diameter of 0.85 µm and is 5 µm long. There is a potential difference of 225 mV between the ends of the channel. The sodium ions have a drift velocity through the channel of 0.015 m s−1 and in a period of 1 ms a total of 15×106 ions exit the channel.
(a) What total charge exits the channel in a period of 1 ms?
(b) What is the current in the ion channel?
(c) What is the ‘resistance’ of the channel to the flow of sodium ions?
(d) What is the number density, n, of ions in the channel?
(e) How many sodium ions are in the channel at any one time?
CONSIDER A CIRCUIT HAVING 30 VOLT SOURCE , SWITCH , RESISTANCE R , CAPACITOR 0.01 MICRO FARAD AND RESISTANCE 10 KILO OHM CONNECTED IN SERIES WHEN THE SWITCH IN THIS CIRCUIT IS CLOSED , THE VOLTAGE ACROSS THE CAPACITOR MUST RISE TO 6.59 VOLT IN 0.1 MS IDENTIFY THE VALUE OF R THAT SHOULD BE USED
An electron is to be accelerated in a uniform electric field having a strength of 2.00 × 106 V/m.
(a) What energy in keV is given to the electron if it is accelerated through 0.400 m?
(b) Over what distance would it have to be accelerated to increase its energy by 50.0 GeV?
Q9. (a) What is the potential between two points situated 10 cm and 20 cm from a 3.0 μC point charge?
(b)To what location should the point at 20 cm be moved to increase this potential difference by a factor of two?
A 0.500 cm diameter plastic sphere, used in a static electricity demonstration, has a uniformly distributed 40.0 μC charge on its surface. What is the potential near its surface?
A test charge of +2 μC is placed halfway between a charge of +6 μC and another of +4 μC separated by
10 cm.
(a) What is the magnitude of the force on the test charge?
(b) What is the direction of this force (away from or toward the +6 μC charge)?
Two horizontal parallel plates are conducting in a vacuum.
A small particle of mass 4 × 10-12kg, carrying a positive charge of 3.0 × 10-14C is released at A close to the upper plate. What total force acts on this particle?
A small charged sphere of mass 2.1 × 10-4kg, suspended from a thread of insulating
material, was placed between two vertical parallel plates 60 mm apart. When a potential
difference of 4200 V was applied to the plates, the sphere moved until the thread made an angle
of 6o to the vertical.
i) Calculate the charge on the sphere and determine the number of charged particles on the sphere.
