PS Ch 7 Test

Front

What is gravitational kinetic energy?

Back

The energy of an object due to its motion as it falls under the influence of gravity.

Front

What is the function of a generator?

Back

To convert mechanical energy into electrical energy.

Front

What does Ohm's law state about resistance?

Back

Resistance is equal to voltage divided by current.

Front

How do you calculate the voltage in a transformer?

Back

Use the formula: Vp/Vs = Np/Ns, where Vp is primary voltage, Vs is secondary voltage, Np is number of turns in primary coil, and Ns is number of turns in secondary coil.

Front

What must electric charges do to create a magnetic field?

Back

Electric charges must be moving.

Front

Define gravitational potential energy.

Back

The energy stored in an object due to its position in a gravitational field.

Front

What is the formula for calculating kinetic energy?

Back

Kinetic energy (KE) = 1/2 mv², where m is mass and v is velocity.

Front

What is the relationship between voltage, current, and resistance?

Back

According to Ohm's law, V = IR, where V is voltage, I is current, and R is resistance.

Front

What is a transformer used for?

Back

To change the voltage of an alternating current (AC) in a circuit.

Front

What is the unit of electrical resistance?

Back

Ohm (Ω).