LewLew Midterm Physics 1st

What types of charges attract?

• Positive and Positive

• Positive and Neutral

• Negative and Neutral

• Positive and Negative

What charge does a proton have?

• negative (-)

• positive (+)

• neutral or no charge (0)

What charge does an electron have?

• negative (-)

• positive (+)

• neutral or no charge (0)

If a substance has a higher number of electrons than protons on its surface, what type of charge does it have?

• A positive charge.

• A negative charge.

• A neutral charge

• No charge at all

^{Is this circuit open or closed?}

• Closed

• Open

What is an electric current?

• a build up of electrons

• the difference in charge between 2 points

• the flow of electrons over a circuit

• the opposition to flow of electrons

The wattage value for any resistor is equal to ____.

• I X R

• E/R

• I X E

• I/R

Total series circuit wattage is equal to source voltage ____.

• multiplied by the voltage value going through any resistor

• multiplied by the current value going through any resistor

• divided by the current value going through any resistor

• divided by the voltage applied to the circuit and the total resistance of the circuit

Using the circuit shown solve for total power dissipated in this circuit.

• 20 watts

• 30 watts

• 1.8 Kilowatts

• 180 watts

When a resistor in a series circuit is replaced by another resistor with an increased resistance value, the total circuit current will __________.

• stay the same

• decrease

• increase

• double in value