Physical Science Spring Review Electricity and Magnetism

Electric current is produced as ________ flow from a negative area to a positive area. a. electrons b. protons c. photons d. neutrons

Electric current is produced as ________ flow from a negative area to a positive area. a. electrons b. protons c. photons d. neutrons

Which of the following describes a material thorough which electricity does not flow? a. metals b. conductors c. water d. insulators

Which of the following describes a material thorough which electricity does not flow? a. metals b. conductors c. water d. insulators

Which of the following is NOT a good electric insulator? a. plastic b. glass c. paper d. wood e. water

Which of the following is NOT a good electric insulator? a. plastic b. glass c. paper d. wood e. water

What three elements are attracted to magnets?

iron, cobalt, nickel

Which is NOT a property of a permanent magnet? a. the atoms are lined up to form domains b. they attract iron containing object c. they have a north and south pole d. they only produce magnetic fields when electric current is running through them

Which is NOT a property of a permanent magnet? a. the atoms are lined up to form domains b. they attract iron containing object c. they have a north and south pole d. they only produce magnetic fields when electric current is running through them

When current is run through a copper coil which of the following is produced? a. mechanical energy b. electric field c. magnetic field d. parallel circuit

When current is run through a copper coil which of the following is produced? a. mechanical energy b. electric field c. magnetic field d. parallel circuit

A circuit breaker or a ________ is a safety device that ensures that will break the circuit if too much current is detected? a. fuse b. bulb c. resistor d. transformer

A circuit breaker or a ________ is a safety device that ensures that will break the circuit if too much current is detected? a. fuse b. bulb c. resistor d. transformer

What is the equation for Ohms Law?

V = IR voltage = current x resistance

An electric heater is connected to a 120 volt line, and it uses 10 amps of current. What is the resistance used by the heater?

An electric heater is connected to a 120 volt line, and it uses 10 amps of current. What is the resistance used by the heater? V = IR 120 V = 10 A x R = 12 