In current electricity, Ohm.s law is obeyed by all :
Electric current
The direction of the flow of current through electric circuit is
The electric current in AC circuit is given by the relation i = 3sinomegat + 4cosomegat . The rms value of the current in the circuit in ampere is
Heating Effect in Current Electricity
Statement I: Since all the current coming to our house returns to powerhouse ( as current travels in a closed loop), there is no need to pay the electricity bill. Statement II: The electricity bill is paid for the power used , not for the current used.
(A) : A galvanometer can be used as an ammeter and Voltmeter. (R) : A galvanometer cannot be used in electric circuit to detect the direction of electric current.
"We supply electric current continuously to an electric heater. But the temperature of the heater remains constant after some time." Why ?
