Describe and explain how you would investigate how the resistance of a lamp changes with voltage.

What is transferred to an object when work is done

When metals react what occurs in terms of their valence electrons ?

In the circuit shown in fig. e26.31 the batteries have negligible internal resistance and the meters are both idealized. with the switch s open, the voltmeter reads 15.0 v. (a) find the emf of the battery. (b) what will the ammeter read when the switch is closed