CHAPTER 3 OHM’S LAW

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

• Power

• Resistance

• Inductance

• Capacitance

What equation would you use to solve for voltage?

• V = I/R

• V = PR

• V = CI

• V = IR

What does the letter 'I' stand for in Ohm's Law?

• Current

• Voltage

• Inductance

• Resistance

What does the letter 'R' stand for in Ohm's Law?

• Rate of change

• Capacitance

• Inductance

• Resistance

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 stay the same

• The voltage will increase

If there are 10 Volts across a 5 Ohm resistor, what is the current?

• 50A

• 15 A

• 2A

• 0.5 A

If there are 40 Volts and 5 Amps running through an electrical circuit, what is the resistance of the circuit?

• 45 Ω

• 0.125 Ω

• 35 Ω

• 8 Ω

If there are 7 Amps running through a 3 Ohm resistor, what will the voltage be across the resistor?

• 2.3 V

• 21 V

• 21 Ω

• 10 V

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

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

• The current will stay the same

• The current will increase

• The current will decrease