General
General
Easy
Question
If 
is a root of the equation 
then
The correct answer is:
Related Questions to study
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Why the current does not rise immediately in a circuit containing inductance
Why the current does not rise immediately in a circuit containing inductance
Physics-General
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The device that does not work on the principle of mutual induction is
The device that does not work on the principle of mutual induction is
Physics-General
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A transformer is employed to
A transformer is employed to
Physics-General
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A solenoid is 
long and its inner diameter is 
. It has three layers of windings of 1000 turns each and carries a current of 
. The magnetic flux for a cross-section of the solenoid is nearly
A solenoid is long and its inner diameter is . It has three layers of windings of 1000 turns each and carries a current of . The magnetic flux for a cross-section of the solenoid is nearly
Physics-General
Physics-
The current through a
inductor is shown in the following graph. The induced emf during the time interval 
to 
will be
The current through a inductor is shown in the following graph. The induced emf during the time interval to will be
Physics-General
Physics-General
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An e.m.f. of 
is produced in a coil when the current in it changes at the rate of 
. The inductance of the coil is
An e.m.f. of is produced in a coil when the current in it changes at the rate of . The inductance of the coil is
Physics-General
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In a coil when current changes from 10A to 2A in time 0.1s, induced emf is 3.28 V. what is self –inductance of coil?
In a coil when current changes from 10A to 2A in time 0.1s, induced emf is 3.28 V. what is self –inductance of coil?
Physics-General
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What is increased in step-down transformer
What is increased in step-down transformer
Physics-General
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Fleming’s left and right hand rule are used in
Fleming’s left and right hand rule are used in
Physics-General
Physics-
There are two solenoids of same length and inductance L but their diameters differ to the extent that one can just fit into the other. They are connected in three different ways in series. (1) They are connected in series but separated by large distance, (2) they are connected in series with one inside the other and senses of the turns coinciding, (3) both are connected in series with one inside the other with senses of the turns opposite as depicted in figures 1, 2 and 3 respectively. The total inductance of the solenoids in each of the case 1, 2 and 3 are respectively
There are two solenoids of same length and inductance L but their diameters differ to the extent that one can just fit into the other. They are connected in three different ways in series. (1) They are connected in series but separated by large distance, (2) they are connected in series with one inside the other and senses of the turns coinciding, (3) both are connected in series with one inside the other with senses of the turns opposite as depicted in figures 1, 2 and 3 respectively. The total inductance of the solenoids in each of the case 1, 2 and 3 are respectively
Physics-General
Physics-General
Maths-
The two tangents to the curve 
at the points where it crosses 
-axis, are
The two tangents to the curve at the points where it crosses -axis, are
Maths-General
Maths-
A circular metal plate is heated so that its radius increases at a rate of 0.1 mm per minute. Then the rate at which the plate’s area is increasing when the radius is 50 cm is
A circular metal plate is heated so that its radius increases at a rate of 0.1 mm per minute. Then the rate at which the plate’s area is increasing when the radius is 50 cm is
Maths-General
Maths-
Any tangent to the curve 
Any tangent to the curve
Maths-General
Maths-
If 
and 
are the lengths of the subtangent and the subnormal at the point 
on the curve 
, then
If and are the lengths of the subtangent and the subnormal at the point on the curve , then
Maths-General
Maths-
The tangent to the curve 
has maximum slope at which is equal to
The tangent to the curve has maximum slope at which is equal to
Maths-General
