Ohms law

Ohms law

Equation: V=IR

V=voltage; use 'V' as the units

I=current; use 'amps' as the units

R= resistance; use 'ohms as the units

Series circuit

• The battery is the voltage

• The resistor is the light bulb

• The wires are the current

Multiple Choice

How many Volts would it take to push 1 Amp through a resistance of 1 Ohm

• 10 volts

• 1 volt

• 48 volts

• 5 volts

Multiple Choice

This circuit has a 24 volt battery and the resistor is 8 ohms. How many amps are running through the circuit?

• 3 Amps
• 192 Amps
• 2 Amps
• 4 Amps

Multiple Choice

What is the Voltage of a circuit that has a resistance of 5 Ω and a current of 2 A?

• 25 V
• 10 V
• 2.5 V
• 0.4 V

Multiple Choice

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

• 1 Ohm

• 3 Ohms

• 4 Ohms

• 12 Ohms

PARALLEL

This is hard to explain

the squiggly lines are the light bulb resistance, the 4 lines to the left are the battery voltage

Multiple Choice

The current going through the 45 ohm resistor is 

• 0.05 amps
• 0.2 amps
• 0.1 amps
• 5 amps

Multiple Choice

The total resistance of this circuit is 

• 25.7 ohms
• 315 ohms
• 324 ohms
• 90 ohms