Homework Statement
Figure shows two coils placed close to each other . When the key is pressed so that a current starts building up in one the coils
(a) a current flows along CBA in the loop
(b) a current flows along ABC in the loop
(c) No current flows through the loop
(d) An...
I also want to know that can we use star to delta formation here as in this case applying of
krichoff's law is easy , but what if all the value of capacitance is different ?
I got it .
It is the electrostatic force of attraction b/w the charges .
One more question : Why its value remains constant as the distance(r) b/w the charges goes on decreasing and magnitude of force of attraction is inversely proportional to r^2 ?
Find the equivalent capacitance of the combinations shown in the fig.
(refer to the file attached)
Is there any easier method to solve instead of this method by assuming a constant potiential difference is applied across the circuit and a total charge Q flown in it.
Force act on dielectric slab on inserting between the parallel plate = [8.85 * 10^-12]b(k-1)(V^2)/2d
where b = width of the plate , d = distance b/w the plates , V is the constant potential difference across the plates and k = dielectric constant
Which force is acting on dielectric...
Homework Statement
Let Pn denotes the no. of ways of selecting 3 people out of 'n' sitting in a row if no two of them are
consecutive and Qn is the corresponding figure when they are in circle .
If Pn - Qn = 6 , then 'n' is equal to:
The Attempt at a Solution
Pn = (n-2) C 3
Qn =...
Yes Tension is not constant.
Let the block moves a distance (x) .
1/2m[v(a)^2] = Tx (By energy conservation)
1/2m[v(a)^2] = mAx (A is the acceleration of block A)
1/2m[v(a)^2] = mv(a)(dv/dx)x
integrating it
v(a) = (2x)^1/2
again integrating it
t(a) = (L/2)^1/2
How to get...
Homework Statement
Two blocks A and B , each of same mass m are attached by a thin inextensible string through an ideal pulley .
Initially block B is held in position as shown in figure . Now the block B is released . Block A will slide to right and hit the pulley in time t(a) . Block B...
Homework Statement
A solid uniform sphere of radius R and mass M rolls without slipping with angular velocity (w) when it
encounters a step of height 0.4R . find the angular velocity immediately after inelastic impact with the rough step.
Homework Equations
The Attempt at a...