Ohms Law

In the equation V=I*R I = what ?

• Voltage

• Current

• Resistance

• Power

The units associated with resistance?

• Amps

• Voltage

• Current

• Ohms

The resistance of an electric hair dryer is 50Ω. 4 A of current flows through the circuit. What is the voltage?

• 25 V

• 50 V

• 100 V

• 200 V

6 Amps of current flows through a fan’s resistor when 12 Volts are supplied. What is the resistance of the resistor?

• 1 Ohm

• 2 Ohms

• 3 Ohms

• 4 Ohms

If V= I*R is rearranged to solve for I. What is the new equation?

• I = V/R

• I = R/V

• I = R*V

• R = V*I

Current is measured in ?

• Ohms

• Volts

• Amps

• Watts

A 110 volt wall outlet supplies power to a light with a resistance of 500 ohms. How much current is flowing through the light?

• .11 Amps

• .22 Amps

• 55000 Amps

• 4.54 Amps

Which term below describes the opposition to the flow of electrons in a circuit?

• voltage

• current

• resistance

• power

What size resistor would produce a 3 Amp current flow with a 12 Volt battery

• 1 Ohm
• 3 Ohms
• 4 Ohms
• 12 Ohms

Tags

CCSS.7.NS.A.1C

Electricity that flows in a closed path is called a

• path
• current
• circuit
• light