Electricity and Magnetism Flashcard

Front

What are the two areas of physical science closely related to electric motors and generators?

Back

Electricity and magnetism.

Front

What type of circuit causes an entire string of lights to go out when one bulb burns out?

Back

Series circuit.

Front

What is the formula to calculate current (I) in a circuit?

Back

I = V/R, where I is current, V is voltage, and R is resistance.

Front

What is the current produced by a 9-volt battery flowing through a resistance of 0.2 ohms?

Back

45 amps.

Front

What does a parallel circuit mean?

Back

In a parallel circuit, multiple paths exist for current to flow, so if one path is interrupted, others can still function.

Front

What does a series circuit mean?

Back

In a series circuit, all components are connected end-to-end, so if one component fails, the entire circuit is interrupted.

Front

What is the unit of electric current?

Back

Ampere (A).

Front

What is the unit of resistance?

Back

Ohm (Ω).

Front

What does the symbol for a battery look like in circuit diagrams?

Back

Two parallel lines, one longer (positive) and one shorter (negative).

Front

What is Ohm's Law?

Back

Ohm's Law states that the current through a conductor between two points is directly proportional to the voltage across the two points.