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Subject: Physics, asked on 18/6/21

At the instant, the current through coil is 0.2A . The energy stored in its magnetic field is 6mj . What is the self inductions of coil

Subject: Physics, asked on 10/2/21

write or derive expression for galvanometer as a voltmeter

Subject: Physics, asked on 10/1/22

Using Ampere?s law, derive an expression for the magnetic induction inside an ideal solenoid
carrying a steady current.

Subject: Physics, asked on 9/1/22

According to Lenz?s law, the direction of the induced current in a closed conducting loop is
such that the induced magnetic field attempts to
(a) Maintain the original flux through the loop
(b) Maximize the magnetic flux through the loop
(c) Maintain the magnetic flux through the loop to zero
(d) Minimize the magnetic flux through the loop

Subject: Physics, asked on 12/10/21

State the uses of a potentiometer

Subject: Physics, asked on 18/11/21

suppose there is a uniform electric field E= 50 V/mj cap. If a negative charged particles moves in the -y direction, then it's electric potential energy......

Subject: Physics, asked on 18/11/21

Two charged particles 2q and -6q are kept at distance of 4 m as shown in figure below
??
2q. 4m. -6q

Subject: Physics, asked on 13/11/21

The EMF of the cell is balance against a length of 217cm of a potentiometer wire. When the cell is shunted by a resistance of 15ohm, the balancing length is 200cm. Find the internal resistance of the cell.

Subject: Physics, asked on 3/8/21

Kindly answer very fast urgent

Subject: Physics, asked on 27/6/21

A pair of adjacent coils has a mutual inductance of 0.5 H. If the current in one coil changes
from 0 to 10 A in 0.25s, what is the change in flux linkage with other coil?

Subject: Physics, asked on 28/6/21

A coil of resistance 5 ? & self-inductance of 0.2 H is connected in series with variable
capacitor across 30V, 50Hz supply. At what value of capacitor resonance will occur? Find
the corresponding value of current.

Subject: Physics, asked on 10/2/21

what is kirchoff's voltage law

Subject: Physics, asked on 11/5/21

Masses of three wires are in ratio 1:3:5 and their lengths are in the ratio 5:3:1 the ratio of their electrical resistance is

Subject: Physics, asked on 29/6/21

What are eddy currents? Write any two applications of eddy currents

Subject: Physics, asked on 26/12/21

Find current supplied by battery: 1) just after closing switch S and 2) after a long time

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