Which one of the following is an energy unit?
A device that converts ac current to dc current is a/an
A device that converts ac current to dc current is a/an
In a circuit of two identical lamps in parallel, if the curr…
In a circuit of two identical lamps in parallel, if the current through 1 lamp is 1 A, what is the current through the other lamp?
6 V is impressed across a parallel circuit containing two la…
6 V is impressed across a parallel circuit containing two lamps. If one lamp has a 6 V across it, what is the voltage across the other lamp?
The direction of an electric field is the direction of the f…
The direction of an electric field is the direction of the force exerted on
To say that an object becomes electrically polarized means t…
To say that an object becomes electrically polarized means that
How does the approximate number of atoms in the air in your…
How does the approximate number of atoms in the air in your lungs compare with the number of breaths of air in Earth’s atmosphere?
An electric toy draws 0.5 A of current from a 120 V outlet. …
An electric toy draws 0.5 A of current from a 120 V outlet. How many watts of power does the toy consume?
Why are heavier elements much larger than lighter elements?
Why are heavier elements much larger than lighter elements?
Calculate the power in watts of a hair dryer that operates o…
Calculate the power in watts of a hair dryer that operates on 120 V and draws a current of 10 A.