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MGNK Junction
Vector
If the vectors in the figure satisfy |u|=|v|=1 and u + v + w=0, what is |w|=?
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Vector
In the figure, the tip of c and the tail of d are both the midpoint of QR. Express c and d in terms of a and b
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Electric charges
An attractive force of 1500N exist between a +900nC charge and another charge. The two charges are separated by 50mm. What is the...
474
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Electric charges
A force of 500N exist between two identical point charges separated by a distance of 40cm. Calculate the magnitude of the two point charges.
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Electric charges and forces
The force on two positive charges of magnitudes 5µc and 12µc is 100N. What is the distance between the two charges in cm?
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Electric charges
Calculate the force between two point charges of 10µc and -20µc separated by a distance of 25cm.
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General Physics-Electric charges
Two like charges of 8µC are held a distance of 25m apart. What force of repulsion exists between them
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General Physics-Electric charges
Consider a proton (mp=1.67x10-27 kg; qp=+1.60x10-19 C) and an electron (me=9.11x10-31 kg; qe=-1.60x10-19 C) separated by 5.29x10-11 m....
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General Physics-Electric charges
How many electrons represent a charge of 70µC?
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Transistor
9.In the circuit shown in the figure, the BJT has a current gain (β) of 50. For an emitter – base voltage VEB = 600 mV, calculate the...
23
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Diodes
10. Determine the current flowing through 3Ω and 4Ω resistors of the circuit given below. Assume that diodes D1 and D2 are ideal diodes.
13
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Boolean expressions
7. Prove the following Boolean expressions using the laws and theorems of Boolean algebra. i) (A+B) (A+B) = A ii) A(A+B) = AB iii) (A+B)...
10
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Logic gates
12.Verify the given Boolean equation A + AB = A + B using truth table
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Logic gates
Write down Boolean equation for the output Y of the given circuit and give its truth table
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Transistor
8.A transistor of α = 0.99 and VBE = 0.7 V is connected in the common emitter configuration as shown in the figure. If the transistor is...
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Transistors
7.Assuming VCEsat= 0.2 V and β = 50, find the minimum base current (IB) required to drive the transistor given in the figure to saturation.
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LED
6. Determine the wavelength of light emitted from LED which is made up of GaAsP semiconductor whose forbidden energy gap is 1.875 eV....
83
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Diodes
5.Four silicon diodes and a 10 Ω resistor are connected as shown in figure below. Each diode has a resistance of 1Ω. Find the current...
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Diodes
3.The given circuit has two ideal diodes connected as shown in figure below. Calculate the current flowing through the resistance R1
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Diodes
A silicon diode is connected with 1kΩ resistor as shown. Find the value of current flowing through AB.
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