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Electric Circuits
WHY A METAL CAN NOT BE USED AS DIELECTRIC MEDIUM IN A CONDENSER?
Electric Circuits
what is the critical angle for a material of refractive index square root 2
Electric Circuits
When a pn junction is made the diffusion of electrons from n type to p type occurs. How the holes from p type to n type flow in this case ? I was told that the hole current is due to the transfer of electrons from one valance band to the other. But as the diffusion current electrons are in conduction band , are they responsible for hole current OR only the valance band electrons take part in the flow of hole current? Plz answer
Electric Circuits
how is the direction of electric current related to the direction of flow of electrons in a wire?
Electric Circuits
1.Two resistors with resistance 5ohm and 10 ohm respectively are to be connected to battery of 6V .So as to obtain
(a)Minimum current flowing
(b)maximum current flowing
i.How will you connect the resistance in each case?
ii.Calculate the strength of total current in the circuit in the two cases.
2.calculate the current in a circuit of 500C of charge passes through it in 10 minutes.
3.An electric lamp is marked 2.5W,220V.It is used for 10 hrs daily .Calculate its
(a)resistance
(b) energy consumed in kWh per day.
4.what is the shape of the graph between V and I where V is the potential difference between the ends of an ohm resistor and I is the current flowing through it.
5.You are given two resistor of 5 ohm and 20 ohm,and a battery of 2.5 V, a key and an ammeter .Draw a circuit diagram of all given components such that the ammeter gives a reading of 0.1A.
(a)Minimum current flowing
(b)maximum current flowing
i.How will you connect the resistance in each case?
ii.Calculate the strength of total current in the circuit in the two cases.
2.calculate the current in a circuit of 500C of charge passes through it in 10 minutes.
3.An electric lamp is marked 2.5W,220V.It is used for 10 hrs daily .Calculate its
(a)resistance
(b) energy consumed in kWh per day.
4.what is the shape of the graph between V and I where V is the potential difference between the ends of an ohm resistor and I is the current flowing through it.
5.You are given two resistor of 5 ohm and 20 ohm,and a battery of 2.5 V, a key and an ammeter .Draw a circuit diagram of all given components such that the ammeter gives a reading of 0.1A.
Electric Circuits
1.calculate the current in a circuit of 500C of charge passes through it in 10 minutes.
Electric Circuits
a certain horse power dc motor is running at a full load speed of 1160 rpm. at no load condition the speed is 1300 rpm. calculate speed regulation in percentage
Electric Circuits
if n=1445 rpm, calculate angular velocity in rad/sec.
Electric Circuits
write the general power efficiency of a motor equation in % ?
Electric Circuits
What historical event introduced Daylight Savings Time?
