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Electric Circuits
A guage copper wire has a cross sectional area of 8.2×10-7 . It carries a current of 1.67A. Find 1.The magnitude of the electric field in the wire 2. The potential difference between two point on the wire 50.0cm apart 3. The resistance of a 50.0m length 4. Suppose the resistance of copper wire is 1.05 ohms at 20 degree centigrade. Find the resistance at 0 degree and 100 degree
Electric Circuits
In the expression F=k qq/r2 why k=1/4pi epsilon
Electric Circuits
How will the potential difference across the resistors in a parallel circuit change if ONE of the bulbs burns out, and the current cannot pass through that path?
Electric Circuits
Why is the constant K in coulumbs law is eqaul to 1/4pie epsilon not......
and second que is that
why only K is used as constant of proportionality in coulumbs Law..??
and second que is that
why only K is used as constant of proportionality in coulumbs Law..??
Electric Circuits
Suppose the coil of a meter has a resistance r of 20ohms and is fully deflected by a current of 5mA. Show that it can be converted to a meter of range 0-5A
Electric Circuits
1) Describe how you demonstrate that white light is compose of a number of colours.
2) give an example of magnetic induction and mention the feature which distinguish magnetic induction from other process of magnetization.
3) describe two example of resonance
4) define wavelength,frequency and wave velocity and also deduce a relationship between them.
2) give an example of magnetic induction and mention the feature which distinguish magnetic induction from other process of magnetization.
3) describe two example of resonance
4) define wavelength,frequency and wave velocity and also deduce a relationship between them.
Electric Circuits
A circuit shows two resistors whose resistance are 0.40ohms and 0.60ohms connected in parallel. They are part of a circuit which carries a current I, and the current in the 0.40ohms resistor is 1.50A
Calculate:
1) The current in the circuit
2) The current in the 0.60ohm resistor
Calculate:
1) The current in the circuit
2) The current in the 0.60ohm resistor
Electric Circuits
Calculate the resistance of the resistor required by a galvanometer of resistance 50 ohms which gives a full scale deflection for 1mA, to be adapted to measure currents of up to 5A
Electric Circuits
An a.c of voltage 50Hz is connected to an inductor of 2H and neglect table resistant. The current r.m.s flow in the coil when the frequent of voltage is changed to 400Have keeping the magnitude on the voltage thesame, the current flowing now is?
Electric Circuits
A conductor possesses a positive charge of 3.2x 10-19 C. How many electron
does it have in excess or deficit (e = 1.60 x 10-19C).
does it have in excess or deficit (e = 1.60 x 10-19C).
