capacitor is to have an energy content of 20J it must be placed across a potential difference of________________?

Related Mcqs:

at a point may be defined as equal to the lines of force passing normally through a unit cross section at that point ?

A. Electric intensity B. Magnetic flux density C. Electric flux D. None of the above...

A positive and a negative charge are initially 50 mm apart. When they are moved close together so that they are now only 10 mm apart, the force between them will be________________?

A. 5 times smaller than before B. 5 times greater than before C. 10 times greater than before D. 25 times larger than before...

The inverse of capacitance is called_______________?

A. reluctance B. conductance C. susceptance D. elastance...

While testing a capacitor with ohm meter, if the capacitor shows charging, but the final resistance reading is appreciably less than normal, it can be concluded that the capacitor is____________?

A. short-circuited B. open circuited C. alright D. leaky...

Electric intensity being a vector quantity always points_______________?

A. along the direction of force experienced by a unit positive charge B. opposite to the direction of force experienced by a unit positive charge C. perpendicular to the direction of force experienced by a uit positive charge D. any of above...