Showing posts from March, 2022
MAGNETIC EFFECTS OF ELECTRIC CURRENT DOMESTIC ELECTRIC CIRCUITS In homes, electric power is supplied through a main supply (mains), supported through overhead electric poles or by underground cables. In thi…
MAGNETIC EFFECTS OF ELECTRIC CURRENT ELECTRIC GENERATOR The principle of electromagnetic induction can be applied to produce large currents for use in homes and industry.
MAGNETIC EFFECTS OF ELECTRIC CURRENT ELECTROMAGNETIC INDUCTION Consider a conductor is moving inside a magnetic field or a magnetic field is changing around a fixed conductor. This was first studied by English …
MAGNETIC EFFECTS OF ELECTRIC CURRENT ELECTRIC MOTOR It is a rotating device that converts electrical energy to mechanical energy.
MAGNETIC EFFECTS OF ELECTRIC CURRENT FORCE ON A CURRENT-CARRYING CONDUCTOR IN A MAGNETIC FIELD An electric current through a conductor produces a magnetic field. This field exerts a force on a ma…
MAGNETIC EFFECTS OF ELECTRIC CURRENT MAGNETIC FIELD DUE TO A CURRENT-CARRYING CONDUCTOR Experiment to find the direction of the field:
MAGNETIC EFFECTS OF ELECTRIC CURRENT Electricity and Magnetism are linked to each other. It can be shown by the following experiment.
ELECTRICITY HEATING EFFECT OF ELECTRIC CURRENT A battery or a cell is a source of electrical energy. It generates potential difference that sets the electrons in motion to flow the current through a resistor or…
ELECTRICITY RESISTANCE OF A SYSTEM OF RESISTORS In electrical gadgets, resistors are used in various combinations based on Ohm’s law.
ELECTRICITY FACTORS ON WHICH THE RESISTANCE OF A CONDUCTOR DEPENDS Note the ammeter reading in an electric circuit with
ELECTRICITY OHM’S LAW Set up a circuit consisting of a nichrome wire XY (0.5 m length), an ammeter, a voltmeter and four cells of 1.5 V each. (Nichrome = an alloy of Ni, Cr, Mn & Fe.)
ELECTRICITY ELECTRIC POTENTIAL AND POTENTIAL DIFFERENCE Electric charges do not flow in a metallic conductor (e.g. copper wire) by themselves. Here, gravity has no role.
ELECTRICITY ELECTRIC CURRENT AND CIRCUIT Flow of electric charges through a conductor (e.g., metallic wire) is called an electric current.
