What is a closed loop of conductors through which charges flow? a. an insulator b. a circut c. a conductor d. a switch

B. a circuit

Explanation:

Circuit:  a circuit is a closed part through which charge flow.

There are different circuit element the include

Resistor: A resistor is a electrical device that has the ability to resist the flow of electric current in a circuit.

Capacitor: A capacitor is an electrical device that has the ability to store charges in a circuit.

Inductor: An inductor is an electrical device that has the ability to store

electric energy, in form of magnetic energy.

These circuit elements can either be connected in series or it can be connected in parallel.

MEASURING DEVICE IN A CIRCUIT:

Voltmeter: This is used to measure voltage in a circuit. And is connected parallel to the circuit

Ammeter: This is used to measure current in a circuit. And it is connected in series to the circuit.

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.