what is resistance use of antibiotics

Antibiotics are substances obtained from microorganisms - which are antagonistic to growth of other pathogenic bacteria. Antibiotics are widely used in the field of medicines to cure number of diseases. Some of the antibiotics - which can be produced by ..

The resistance of a resistor depends on the nature of the material, its geometrical features (length and cross-sectional area) and on the temperature and pressure. It is useful to separate out the dependence on the geometrical factor. Consider a rectangular slab of some conduc..

Antibiotics - They are produced by micro-organisms that are toxic to other micro organisms. Alexander Fleming in 1920 found that bacteria donot flourish in nutrient agar surrounded by the fungus Penicillium notatum westling. He found that this fungus produces an antibiotic calle..

They are produced by micro-organisms that are toxic to other micro organisms. Alexander Fleming in 1920 found that bacteria donot flourish in nutrient agar surrounded by the fungus Penicillium notatum westling. He found that this fungus produces an antibiotic called penicillin. Ther..

>m/sec produces a large amount of current, as there are a large number of free electrons in a conductor. The drift velocity of the electrons V d is (using E = V / l) Also I = - neAV d On substituting for V d in the above expression we get, or From this, the resistance R can be i..

The resistance of a conductor may be defined in terms of current passing through it and the potential difference across its ends. Resistance of a wire is the ratio of the potential difference 'V' across its ends and the current 'I' flowing through it. The unit of resistance..

It is the ratio of potential difference between the ends of a conductor to the current flowing through it. It is measured in ohms (symbol: ..

Law of Combination of Resistance in Parallel - Connect two resistors 'R 1 ' and 'R 2 ' in parallel to one another between the points A and B. Connect this combination to a battery of potential 'V..

Name of antibiotic Obtained from Erythromycin Streptomyces erythaeraeus Aureomycin Streptomyces aurofaciens Terramycin Streptomyces ramosus Chloromycetin Streptomyces Venezuela Streptomycin Streptomyces griseus Penicillin Pencillium notatum ..

It is found experimentally that the current I flowing through a conductor is directly proportional to the potential difference V across its ends, provided the physical conditions (temperature, mechanical strain, etc.,) remain constan..