List of top Physics Questions on Current electricity asked in TS EAMCET

A capacitor and a resistor are connected in series to an ac source. If the ratio of the capacitive reactance of the capacitor and the resistance of the resistor is 4:3, then the power factor of the circuit is:
Two point charges of magnitudes \( -8 \mu C \) and \( +32 \mu C \) are separated by a distance of 15 cm in air. The position of the point from the \( -8 \mu C \) charge at which the resultant electric field becomes zero is:
The potential difference between the ends of a straight conductor of length 20 cm is 16 V. If the drift speed of the electrons is \( 2.4 \times 10^{-4} \) m/s, the electron mobility in \( m^2 V^{-1} s^{-1} \) is:

The Wheatstone bridge shown in the diagram is balanced. If P3 is the power dissipated by R3 and P1 is the power dissipated by R1, then the ratio P3/P1 is: 

A wire of resistance 2R is stretched such that its length is doubled. Then the increase in its resistance is: 

The effective capacitance between points A and B shown in the circuit is: