JEE Main Test 6...

The resistance of a wire at 300 K is found to be 0.3 Ω. . If the temperature coefficient of resistance of wire is 1.5 × 10^-3 K^-1, the temperature at which the resistance becomes 0.6 Ω is

An electric charge 10^-3 μC is placed at the origin (0, 0) of X-Y coordinate system. Two points A and B are situated at (√2, √2) and (2, 0) respectively. The potential difference between the points A and B will be

Five resistance are connected as shown in the figure. The equivalent resistance between P and Q will be

A capacitor of capacitance 1µF . is filled with two dielectrics of dielectric constants 4 and 6. What is the new capacitance?

If the angles A, B and C of a triangle are in an arithmetic progression and if a, b and c denote the lengths of the sides opposite to A,B and C respectively, then the value of the expression (a/c) sin 2C + (c/a) sin 2A is

A current passing through a coil of self inductance of 2 mH changes at the rate of 20 mAs^-1 . The emf induced in the coil is

Two similar circular loops carry equal currents in the same direction. On moving coils further apart, the electric current will

The energy stored in an inductor of self inductance L henry carrying a current of 1 A is

Compute the shortest distance between the circle x² + y² - 10x - 14y - 151 = 0 and the point (-7, 2).