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Electric Circuits
a point charge q is placed in a cavity in a metal block. if a charge q is brought outside the metal , will the charge q feel any electric force ?
Electric Circuits
A tightly coiled spring having 75 coils each 3.5 cm in diameter is made of insulated metal wire 3.25 mm.in diameter. An ohm meter connected across its opposite ends reads 1.74 ohms. What is the resisitivity of the metal?
Electric Circuits
if the linear momentum of a body is increased by 50%,then the kinetic energy of that body increases by 1)225% 2)25% 3)100% 4)125%
Electric Circuits
the r.m.s value of a carrier voltage of an AM trnsmitter is 35V after modulation to depth of 45% the antenna current in this case is 14.5A if the current increases to 15.8A as result of simultaneus modulation index due to yhe second modulation signal?
Electric Circuits
- B+
CE
P E S2
A
E
Q S1
Q.- Two identical capacitors A and B, both having same capacitance C, are connected with battery of e.m.f. E as shown in figure. Initially both switches are open and initially capacitor B has charge CE coulomb as shown in figure and capacitor A is uncharged. Now switch S1 is closed and S2 is open till capacitor A becomes fully charged, then S1 is open and S2 is closed till flow of charge through battery is stopped. This process constitute one cycle. The cycle is repeated for a number of cycles. Read the above passage carefully and answer the following questions
(A) Charge on capacitor B after second cycle is?
(B) Total work done by the battery Q in 5 cycles is?
CE
P E S2
A
E
Q S1
Q.- Two identical capacitors A and B, both having same capacitance C, are connected with battery of e.m.f. E as shown in figure. Initially both switches are open and initially capacitor B has charge CE coulomb as shown in figure and capacitor A is uncharged. Now switch S1 is closed and S2 is open till capacitor A becomes fully charged, then S1 is open and S2 is closed till flow of charge through battery is stopped. This process constitute one cycle. The cycle is repeated for a number of cycles. Read the above passage carefully and answer the following questions
(A) Charge on capacitor B after second cycle is?
(B) Total work done by the battery Q in 5 cycles is?
Electric Circuits
for a wire its resistance is 2 ohm per metre is converted into circle of radius 7m find out resistance across their on their circumference making 90 degree with centre
Electric Circuits
A platinum resistance thermometer has resistance of 52.5 ohms and 9.75 ohms at 0 degrees celcius and 100 degrees celcius respectively.when the resistance is 8.25 ohms,find the temperature.
Electric Circuits
During a lightning storm, the separation between the clouds and the earth
acts as a giant capacitor with a capacitance of 2500 F. If the transmitting
tower of radio station KBOZ is hit by a bolt of lightning carrying 50. C of
charge, what is the potential difference between the cloud and the tower
acts as a giant capacitor with a capacitance of 2500 F. If the transmitting
tower of radio station KBOZ is hit by a bolt of lightning carrying 50. C of
charge, what is the potential difference between the cloud and the tower
Electric Circuits
A book is on the table. If the weight of the book is 25 newtons, what is the magnitude and direction of the normal force?
Electric Circuits
A ball of mass 0.192 kg is dropped from a
height 2.76 m above the ground.
The acceleration of gravity is 9.8 m/s
2
.
Neglecting air resistance, determine the
speed of the ball when it is at a height 0.699 m
above the ground.
Answer in units of m/s
height 2.76 m above the ground.
The acceleration of gravity is 9.8 m/s
2
.
Neglecting air resistance, determine the
speed of the ball when it is at a height 0.699 m
above the ground.
Answer in units of m/s
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#339914 on Dec 2023
#339914 on Dec 2023