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Electric Circuits
A sample of Si has electron and hole mobilities of 0.13 and 0.05 m /V-s 2 respectively at
300 K. It is doped with P and Al with doping densities of 21 3 1.510 / m and
21 3 2.510 / m respectively. The conductivity of the doped Si sample at 300 K is
300 K. It is doped with P and Al with doping densities of 21 3 1.510 / m and
21 3 2.510 / m respectively. The conductivity of the doped Si sample at 300 K is
Electric Circuits
An LED operates at 1.5 V and 5 mA in forward bias. Assuming an 80% external
efficiency of the LED, how many photons are emitted per second?
efficiency of the LED, how many photons are emitted per second?
Electric Circuits
A signal of frequency 10k Hz is being digitalized by an A/D converter. A possible
sampling time which can be used is
sampling time which can be used is
Electric Circuits
A series circuit with a resistor of 100 Ω
capacitor of 25 μF and inductance of
0.15 H is connected across 220-V, 60-Hz
supply. Calculate (i) current (ii) power
and (iii) power factor in the circuit.
capacitor of 25 μF and inductance of
0.15 H is connected across 220-V, 60-Hz
supply. Calculate (i) current (ii) power
and (iii) power factor in the circuit.
Electric Circuits
Calculate the amount of charge represented by six million protonsCalculate the amount of charge represented by six million protons
Electric Circuits
How much charge is represented by 4,600 electrons?
Electric Circuits
explain cohesive and adhesive force.
Electric Circuits
write down relation between young modulus,bulk modulus and modulus of rigidity.
Electric Circuits
a capacitor of 9F is connected to a 27VV battery.what is charge on capacitor.
Electric Circuits
two resistance 5 and 5 ohm are connected in series to a 20V battery then find current in this circuit.
