Vector
If the vectors in the figure satisfy |u|=|v|=1 and u + v + w=0, what is |w|=?
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MGNK Junction
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...
4710
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.
1,2750
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?
890
Electric charges
Calculate the force between two point charges of 10µc and -20µc separated by a distance of 25cm.
140
General Physics-Electric charges
Two like charges of 8µC are held a distance of 25m apart. What force of repulsion exists between them
60
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....
40
General Physics-Electric charges
How many electrons represent a charge of 70µC?
3600
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...
190
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)...
70
Logic gates
Write down Boolean equation for the output Y of the given circuit and give its truth table
10
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...
120
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.
40
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