[" Are opposites. "],[" 36.एक Butch potential difference of anode and keyode in vacuum tube "],[" 480वोल्ट Is and 10सेकण्ड At the anode 3"times10^(17)" Electron "],[" Let's live. (i) What is the resistance of the tube है? (ii) Order on the anode "],[" What is the rate of emanation है? "],[" answer : (i) "100" किलोडोम,(ii) "2.3" जूल/सेकण्ड। "]

A 100 turn closely wound circular coil of radius 10cm carries a current of 3*2A . (i) What is the field at the centre of the coil? (ii) What is the magnetic moment of this arrangement?

The potential difference across an X ray tube is 12.4 kV and the current through the filament is 2 mA. Calculate : (i) The number of electrons striking per second on the anode. (ii) The speed with which the electron strikes the target. (iii) The shortest wavelength of X-ray emitted.

In the figure ammeter (i) reads a current of 10mA , while the voltmeter reads a potential difference of 3V . What does ammeter (ii) (in mA ) read? The ammeters are identical, the internal resistance of the battery is negligible. (Consider all ammeters and voltmeters as non ideal)

In a discharge tube when 200 volt potential difference is applied 6.25xx10^(18) electrons move from cathode to anode and 3.125xx10^(18) singly charged positive ions move from anode to cathode in one second. Then the power of tube is:

In a discharge tube when 200 volt potential difference is applied 6.25xx10^(18) electrons move from cathode to anode and 3.125xx10^(18) singly charged positive ions move from anode to cathode in one second. Then the power of tube is:

A current is established in a gas discharge tube where a sufficiently high potential difference is applied across the two electrodes in the tube. The gas ionises , electrons move toward positive terminal and positive ions toward the negative. What are the magnitude and sense of the current in a hydrogen discharge tube in which 3.1 xx 10^18 electrons and 1.1 xx 10^18 protons move past a X-sectional area of the tube each second ?