Ohm’s Law Practice Problems

The statement which correctly represents Ohm’s law:

• V = IR

• V = R/I

• R = VI

• I = R/V

Unit of resistance is:

• Volt

• Watt

• Ohms

• Ampere

According to Ohm's Law, current equals the voltage divided by the _________.

• Resistance

• Inductance

• Power

• Conductance

If the current in an electrical circuit is constant, what will happen to the voltage if the resistance is increased?

• The voltage will decrease

• The voltage will increase

• The voltage will stay the same

• Nothing will happen

If you increase the voltage across a resistor, what will happen to the current?

• The current will decrease

• The current will stay the same

• The current will increase

• None of these

If you increase the size of the resistor and keep the voltage the same, what will happen to the current?

• The current will decrease

• The current will increase

• The current will stay the same

• None of these

If Voltage is 24v and I is 2amps, what is the value of R?

• 48ohms

• 12watts

• 12volts

• Other

Ohmic components have a __________ V-I curve:

• Parabolic

• Sinusoidal

• Nonlinear

• Straight line

What is Resistance?

• The ability of electrons to flow

• The ability to reduce the flow of electrons

• Electric potential difference

• A battery

Which material is expected to have least resistivity?

• Mercury

• Lead

• Copper

• Zinc