A 20 μF capacitor and 200 W, 220 V lamp is connected in series across a 220 V alternating supply. In which frequency of the supply the lamp will glow dimmest? 10 Hz. 100 Hz. 1000 Hz. 1 Hz. TRUE ANSWER : ? YOUR ANSWER : ?
Rms value is defined based on which of the following? Current Charge transfer Voltage Heating effect TRUE ANSWER : ? YOUR ANSWER : ?
A external resistance R is connected to a cell of internal resistance r, then the current is maximum when R = r. None of these R > r. R < r. TRUE ANSWER : ? YOUR ANSWER : ?
Atoms have no electric charge because they have an equal number of neutrons and protons. have an equal number of charged and non charged particles. have neutrons in their nuclei. have an equal number of electrons and protons. TRUE ANSWER : ? YOUR ANSWER : ?
Total power consumed in the circuit below is 10 W. Find X. None of these. 2 A. 1 A. 3 A. TRUE ANSWER : ? YOUR ANSWER : ?
The maximum power that can be transferred to the load resistor R from the voltage source in the figure is 7.5 W. 1 W. 9/8 W. 6/8W. TRUE ANSWER : ? YOUR ANSWER : ?
Kirchhoff’s voltage law is used for nodal analysis. representing a current source. finding equivalent resistance. loop analysis. TRUE ANSWER : ? YOUR ANSWER : ?
The current in the resistor R shown in figure will be 0.6 A. 0.8 A. 0.4 A. 0.2 A. TRUE ANSWER : ? YOUR ANSWER : ?
The lead acid cell should not never be discharged beyond 1.8 V. 2 V. 2.1 V 1.9 V. TRUE ANSWER : ? YOUR ANSWER : ?